Season: 1 | 2 | 3
Year: 1977 | 1978 | 1979

Season 1

Season 1, Episode 1: The Mystery of the Haunted House

30 January 1977
The Hardys investigate the disappearance of their own father, a case involving a haunted house, a graveyard, and espionage.
Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Edith Atwater ... Aunt Gertrude
Roger Davis ... Sonny
Simon Scott ... Man

Richard Kiel ... Manager - 'Haunted House'
Jim Antonio ... Rigby

John Kerry ... Stratton

George Murdock ... Officer Harlen
Lew Brown ... 2nd Officer
Bonnie Ebsen ... Madge
Dick Ryal ... Head In Crystal Ball
Reggie Nalder ... The Man

Season 1, Episode 2: The Mystery of Pirate's Cove

6 February 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew

Monte Markham ... Professor Jack Wall
Robert Karnes ... Sheriff King
Arthur Peterson ... Old Man Jensen
Skip Ward ... 2nd Agent

Joe Penny ... Brandon
Ron Nyman ... 1st Agent

Season 1, Episode 3: The Mystery of Witches' Hollow

13 February 1977
On a trip to a retired police captain's country home, the boys and their friends find him missing and themselves plagued with mysteriously threatening happenings that seem related to an old local legend.
Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Marc Vahanian ... Simon
Bert Kramer ... Steve Donner
Sandy Ward ... Capt. Bill Maguire
Gary Springer ... Chet Morton
Dimitra Arliss ... Hazel Thompson
Brad Trumbull ... Sheriff Andrew Houghton
Bill Quinn ... Andy Hudson

Season 1, Episode 4: The Mystery of the Diamond Triangle

20 February 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
Phillip R. Allen ... Everett
Brian Byers ... Morgan
Gordon Jump ... Officer Hooper
Robert Karnes ... Sheriff King

Len Lesser
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew

Season 1, Episode 5: The Disappearing Floor

6 March 1977
While investigating the disappearance of a missing scientist, the boys begin to doubt their senses when they discover an isolated estate loaded with bizarre illusions.
Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Edith Atwater ... Aunt Gertrude
Robin Chesler ... Marcia Collins

Marj Dusay ... Dr. Janice Craddock
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Sam Gilman
David Opatoshu ... Professor Desmond
Howard Platt
Alex Rodine
Michael A. Salcido ... Technician (as Michael Salcido)

Henry G. Sanders ... Guard (as Henry Gayle Sanders)
Jack Schultz ... Lt. Oates

Michael Swan ... Officer

Season 1, Episode 6: The Secret of the Whispering Walls

13 March 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
John Carter ... Walter Tobin
Mary Jo Catlett ... Dora
Barbara Collentine ... Sylvia

Arch Johnson ... Dinko Warner (as Archie Johnson)
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew
Queenie Smith ... Lela
Irene Tedrow ... Ruby

Season 1, Episode 7: The Flickering Torch Mystery

27 March 1977
The boys discover that the missing person investigation they are working on for their dad is linked to his job providing concert security for a rock star Tony Eagle (played by Ricky Nelson)--and that the missing person is linked to a plot to murder Tony.
Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Edith Atwater ... Aunt Gertrude

Ricky Nelson ... Tony Eagle (as Rick Nelson)
John Pleshette ... Carl Fry
Robert Sampson
Herb Voland ... Chief Collig (as Herbert Voland)
Deirdre Berthrong ... Leslie Johnston

Ned Van Zandt ... Richard Johnston
Geoff Parks ... Ticket Taker

Season 1, Episode 8: A Haunting We Will Go

13 April 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew
Carl Betz ... Alex Richmond
Victor Buono ... Seth Taylor

Bob Crane ... Danny Day
Dina Merrill ... Thelma March

Pippa Scott ... Janet Musante
Robert Karnes ... Sheriff King
Peter Brandon ... The Director
Bob Golden ... 1st Reporter

Season 1, Episode 9: The Mystery of the Flying Courier

10 April 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Edith Atwater ... Aunt Gertrude (credit only)
Richard Gautier ... Tail Gunner (as Dick Gautier)
Ken Swofford ... Captain

Penny Peyser ... Suzie
Josh Taylor ... Quentin Miles
Paul Tulley
Walt Davis ... Eric Litton
Gary Springer ... Chet
Judith Doty ... Administrator
Janet Curtis-Larson ... Marisa (as Janet Curtis)

Season 1, Episode 10: Mystery of the Fallen Angels

17 April 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew
Craig Littler ... Vince

A Martinez ... Henry Salazar
Susan Pratt ... Ann (as Susan Pratt O'Hanlon)
Robert Alda ... Robert Jordan
Marjorie Lord ... Clara Jordan

Beverly Garland ... Thelma

Robert Englund ... Gar

Jamie Lee Curtis ... Mary
Migdia Chinea-Varela ... Maria (as Migdia Varela)
Robert Karnes ... Sheriff King
Hanna Hertelendy ... Fortune Teller

Season 1, Episode 11: Wipe-Out

24 April 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Edith Atwater ... Aunt Gertrude
Shelly Novack ... Wally Siebert
James Shigeta ... Kapala
Bruce Gordon
Roger Bowen
Lisa Reeves ... Becky
Debra Clinger ... Liz (as Debbie Clinger)
Frank Michael Liu ... Lt. Kirk
Titus Napoleon ... Lew

Richard Narita ... Desk Clerk
Jim Ishida
Lynne Randall ... Mrs. Engals
Fred Hemmings ... Announcer
Patch Mackenzie ... Girl (as Patch MacKenzie)
Vladimir ... Pomo

Season 1, Episode 12: The Mystery of the Ghostwriters' Cruise

1 May 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
George O'Hanlon Jr. ... Ned Nickerson
Jean Rasey ... George Fayne
William Schallert ... Carson Drew
David Wayne ... John Addams

H.M. Wynant

Les Lannom ... George Tompkins
Susan Woollen ... Cathy
Dane Clark ... Captain Powers
Joan Prather ... Adriane

Reb Brown ... Tony Rosselli
Derek Murcott ... 1st Mate
Leone James ... Interviewer
John Sistrunk ... Seaman (as John Sistunk)

Season 1, Episode 13: The Secret of the Jade Kwan Yin

15 May 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Pamela Sue Martin ... Nancy Drew (credit only)
Lisa Eilbacher ... Callie Shaw
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Edith Atwater ... Gertrude Hardy
Rosalind Chao ... Lily
Richard Loo ... Chen Lee
Herb Voland ... Chief Collig (as Herbert Voland)
David Chow ... Wang
Richard Lee-Sung ... Chu (as Richard Lee Sung)
Bill Saito ... Chao
Brendan Burns ... Haverman

Season 1, Episode 14: Mystery of the Solid Gold Kicker

22 May 1977

Pamela Sue Martin ... Nancy Drew
Shaun Cassidy ... Joe Hardy (credit only)
Parker Stevenson ... Frank Hardy (credit only)
Marc Alaimo ... Masked Man

Val Avery ... Skipper
Howard Cosell ... Himself
Peter Fox ... Directors Assistant

Mark Harmon ... Chip Garvey

Terry Jastrow ... Director (as Terry Jastro)
Jillian Kesner ... Paula Clark
Terry Kiser ... Ben Halstead

Martin Kove ... Pete Miller
William Larsen ... Doctor Hull
George O'Hanlon Jr. ... Ned Nickerson
Michael Pataki ... Deputy Foley
Jean Rasey ... George Fayne
William Schallert ... Carson Drew

Season 2

Season 2, Episode 1: Hardy Boys and Nancy Drew Meet Dracula

11 September 1977

Pamela Sue Martin ... Nancy Drew #1

Leon Askin ... Haufman Berger
Claude Bessy ... Frenchie
Albert Carrier ... Paris Hotel Clerk
Shaun Cassidy ... Joe Hardy

Ruth Cox ... Bess Marvin
Carl Esmond ... Kolbe
Fritz Feld ... Fritz
Karen Fredrik ... Mandy Richards
Ed Gilbert ... Fenton Hardy
Lorne Greene ... Inspector Hans Stavlin
Walter Janovitz ... Waiter (as Walter Jonowitz)

Clyde Lucas ... Lead Guitar in Alison Troy Band (Paul Williams Band)
Norbert Schiller ... Caretaker
Parker Stevenson ... Frank Hardy

Bernie Taupin ... Tim Carstairs
Roger Til ... Paris Police Officer
John Van Dreelen ... Mayor

Norbert Weisser ... Gurd
Paul Williams ... Allison Troy

Season 2, Episode 2: Hardy Boys and Nancy Drew Meet Dracula: Part 2

18 September 1977

Pamela Sue Martin ... Nancy Drew #1

Leon Askin ... Haufman Berger
Claude Bessy ... Frenchie
John Bleifer ... Jensen
Shaun Cassidy ... Joe Hardy

Ruth Cox ... Bess Marvin
Carl Esmond ... Kolbe
Ben Frommer ... Second Citizen
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Lorne Greene ... Inspector Hans Stavlin
Martin Kosleck ... First Citizen
Lidia Kristen ... Maid
Larry Levine ... Wolfman

Clyde Lucas ... Lead Guitar in Alison Troy Band (Paul Williams Band)
George Perina ... Monk
Parker Stevenson ... Frank Hardy

Bernie Taupin ... Tim Carstairs
John Van Dreelen ... Mayor

Norbert Weisser ... Gurd
Paul Williams ... Allison Troy

Season 2, Episode 3: The Mystery of King Tut's Tomb

25 September 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Joe Abdullah ... Melon Vendor (as Joseph Abdullah)
Tom Allard ... Tex (as Thomas Allard)
Edith Atwater ... Aunt Gertrude
Janet Curtis-Larson ... Blonde (as Janet Curtis)
Cesare Danova ... Moustapha
Elyssa Davalos ... Wendy Bonner
Jeff David ... Rashid
Valentin de Vargas (as Val DeVargas)
Taryn Power ... Helene Holstead
George Sawaya

Season 2, Episode 4: Mystery of the Hollywood Phantom: Part 1

2 October 1977
Frank, Joe, and Nancy are at a detective's convention when they discover a mysterious phantom who snatches one detective after another.
Pamela Sue Martin ... Nancy Drew #1

Ruth Cox ... Bess Marvin
Ursaline Bryant ... Ms. Foster
J.D. Cannon ... Jason Fox
Shaun Cassidy ... Joe Hardy
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)

Casey Kasem ... Paul Hamilton

Floyd Levine ... Brandon
Bob Navarro ... Reporter
Sandie Newton ... Mandy
Michael Quinn ... David Hargrove
Clive Revill ... Phil Bronson
Parker Stevenson ... Frank Hardy

Robert Wagner ... Jonathan Hart
James Wainwright ... Arlo Weatherly (as James Wainright)

Dennis Weaver ... Himself

Season 2, Episode 5: Mystery of the Hollywood Phantom: Part 2

9 October 1977
Frank, Joe, and Nancy are at a detective's convention when they discover a mysterious phantom who snatches one detective after another.
Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Lou Antonio ... The Director
J.D. Cannon ... Jason Fox
Armand Cerami ... Hawkins
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Rick Goldman ... Bert

Casey Kasem ... Paul Hamilton

Floyd Levine ... Brandon
John Lupton ... Bob Townsend
Pamela Sue Martin ... Nancy Drew
Sandie Newton ... Mandy
Michael Quinn ... David Hargrove
Clive Revill ... Phil Bronson
Harry Rhodes ... Lieutenant Astor

Jaclyn Smith ... Herself

Robert Wagner ... Himself
James Wainwright ... Arlo Weatherly (as James Wainright)

Season 2, Episode 6: The Mystery of the African Safari

16 October 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Brandyn Artis ... Operator
Parley Baer ... Doc Wilson
Peter Bromilow ... Saunders
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)

Anne Lockhart ... Sarah Masters
Alyscia Maxwell ... Secretary
Albert Popwell ... Keino
Percy Rodrigues ... Minister

Harold Sylvester ... Ngotu
Stuart Whitman ... Trevor Masters

Season 2, Episode 7: The Creatures who came on Sunday

30 October 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Bonnie Ebsen ... Sharon Anderson
Tony Dow ... Mason
Victor Holchak ... Agent Thomas / Berardi
Hunter von Leer ... Agent Stone / Farina
John Quade ... Sheriff

Robert Miano ... Roth
Britt Leach
John Brandon
Don Goodman ... Peter Harris

Season 2, Episode 8: The Strange Fate of Flight 608

6 November 1977

Gino Ardito ... 2nd Newsman
Herbie Braha
Shaun Cassidy ... Joe Hardy
John Clavin
Thayer David
Elena Frank ... Lisa Lindsay
Rozelle Gayle ... 1st Twin
Ed Gilbert ... Fenton Hardy
Dennis Levine ... Radar Operator
Don Marshall ... Flight Engineer
Robin Mattson ... Carla Bradley
Katherine Moffat ... Louise (as Kitty Moffat)

Warren Munson ... Controller
Frank Parker
Parker Stevenson ... Frank Hardy
William Sylvester
Byron Webster ... 1st Newsman
Susan Woollen ... Margaret

Season 2, Episode 9: Acapulco Spies

13 November 1977

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Ed Gilbert ... Fenton Hardy
Craig Stevens ... Alexander Cartel

Rudy Diaz ... Carlos
Kimberly Beck ... Sue
Deborah Ryan ... Jackie Ryan
Jorge Cervera Jr. ... Ramone
Nico Stevens ... Bartender
Julio Medina ... Clerk

Season 2, Episode 10: Nancy Drew's Love Match

20 November 1977

Pamela Sue Martin ... Nancy Drew
Phillip R. Allen ... John Bender
Susan Buckner ... George Fayne
Roger C. Carmel ... John Bender
Jack Colvin ... Lieutenant
Christopher Connelly ... Sandy Castelli
Marilyn King ... Mrs. Phillips
Larry Levine ... Clerk
Mario Machado ... Umpire

Maureen McCormick ... Karen Phillips
Stephen McNally ... Mr. Phillips
Nico Minardos ... Paco
Eugene Peterson ... Pit boss
Charles Robinson ... Was not listed
William Schallert ... Carson Drew

Gil Stratton ... Announcer

Season 2, Episode 11: The Mystery of the Silent Scream

27 November 1977


Val Avery ... Tracy
Norman Bartolo ... Bradshaw
Shaun Cassidy ... Joe Hardy

John Dresden ... Brock
Martha Garrett ... Alicia Peterson
Norman Howell ... Bellhop
Trini López
Elizabeth Stack ... Sally Kline
Parker Stevenson ... Frank Hardy

Larry Storch ... Jesse Miller
Kenneth Tobey ... Chandler

Season 2, Episode 12: Will the Real Santa...?

18 December 1977

Pamela Sue Martin ... Nancy Drew #1
Dan O'Herlihy ... Griffin
Rick Springfield ... Ned Nickerson
John Ericson ... Captain Rogers
Susan Buckner ... George Fayne
William Campbell ... Markham
Jorge Moreno ... Peter Cortez
John Roper ... Lockhart
Walt Davis ... Stewart
Peter MacLean ... Pete Haviland
Sparky Marcus ... Charles
Missy Gold ... Grace
Antony Carbone ... Harry Champion
William Schallert ... Carson Drew

Season 2, Episode 13: The Lady on Thursday at Ten

1 January 1978

Pamela Sue Martin ... Nancy Drew #1
Tony Burton ... Gilmore Lee
Brian Culhane ... Hunch

Nicholas Hammond ... Lt. Douglas Burke
Ron Henriquez ... Chico Fighter
John Karlen ... Rocky
Philip Kenneally ... Desk Sergeant
Tony Mich ... Officer
Simon Oakland ... Lt. Eghan
Jerry Quarry ... Big Jerry
William Schallert ... Carson Drew

Season 2, Episode 14: Oh Say Can You Sing

8 January 1978

Joe Bennett
Debra Clinger ... Harriet Alexander
Gene Evans
Sonny La Rocca ... Eddie
Paul Regina ... Steve
Alex Sheafe ... Dr. Freedman
Nancy Stephens ... Mrs. Morgan
Guy Stockwell
Skip Ward ... Cop
Brett Williams ... Officer Shelley

Season 2, Episode 15: The House on Possessed Hill

22 January 1978

Robert Ball ... Hotel Man
Lloyd Bochner ... Doctor Mann
Shaun Cassidy ... Joe Hardy
Ed Crick ... Jefferson
Royal Dano ... Grant
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Penelope Gillette ... Hotel Woman

Melanie Griffith ... Stacey Blain
Richard LePore ... Allyn
Dorothy Malone ... Mrs. Blain
Wayde Preston ... Sheriff Hollister
Jack Scalici ... Hotel Clerk
Parker Stevenson ... Frank Hardy

Season 2, Episode 16: Sole Survivor

29 January 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Chao Li Chi ... Professor Chaing Tse Lye
Luling Dixon ... Nurse
Ed Gilbert ... Fenton Hardy (as Edmund Glibert)

James Hong ... Dr. Kirin Kwo Low
Jean Marie Hon ... Kim
Robert Horton ... Alan Kline
Michael Jackson ... Newscaster
Diana Muldaur ... Leta Manheim
Barry Primus ... Peter Abrams

Season 2, Episode 17: Voodoo Doll: Part 1

12 February 1978

Shaun Cassidy ... Joe Hardy
Janet Julian ... Nancy Drew (as Janet Louise Johnson)
Parker Stevenson ... Frank Hardy
Al Berry ... Harlequin
James T. Callahan ... Haggarty

Kim Cattrall ... Marie Claire

Linda Dano ... Josette
Howard Duff ... Lt. Martinelle
George Dunn ... Bellman
Peter Forster ... Desk Clerk
Hal Frederick ... Mabotu
Jack Frey ... Clown
Eddra Gale ... Fat Lady
Julius Harris ... Mr. Dove

Ray Milland ... Dr. Orin Thatcher
Angelo Rossitto ... Hawker
Johnny Sekka
Bobby Troup ... Piano Player
Larry Watson ... Skeleton

Season 2, Episode 18: Voodoo Doll: Part 2

19 February 1978

Shaun Cassidy ... Joe Hardy
Janet Julian ... Nancy Drew (as Janet Louise Johnson)
Parker Stevenson ... Frank Hardy
James T. Callahan ... Haggarty

Kim Cattrall ... Marie Claire

Linda Dano ... Josette
Howard Duff ... Lt. Martinelle
Peter Forster ... Desk Clerk
Hal Frederick ... Matobu
Julius Harris ... Mr. Dove

Ray Milland ... Dr. Orin Thatcher
Angelo Rossitto ... Hawker
Johnny Sekka

Season 2, Episode 19: Mystery on the Avalanche Express

26 February 1978

Shaun Cassidy ... Joe Hardy
Janet Julian ... Nancy Drew (as Janet Louise Johnson)
Parker Stevenson ... Frank Hardy
Susan Buckner ... George Fayne
Edd Byrnes ... Hans Monckton
Gary Crosby ... Yates

Vic Damone

Troy Donahue ... Alan Summerville
Fabian ... Paul Leyton
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)

Shepherd Sanders ... Conductor (as Shep Sanders)
Tommy Sands ... Kanner
Deborah Walley ... Gina Bartelli

Season 2, Episode 20: Death Surf

12 March 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Donna Lynn Adrian ... Model
Tara Buckman ... Bernie Lucas
Kenny Endoso ... Rick
Jack Hogan ... Mr. Turner
Maren Jensen ... Maryann Dalton / Teri Turner
Jack Jones ... Sam 'Hubba' Hubblemeyer
Nathan Jung ... Cho-Lin
John Mark Robinson ... Mark Crawford
Ken Scott ... Conrad
Gary Wood

Season 2, Episode 21: Arson and Old Lace

1 April 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy

Zina Bethune ... Janice Cutler

Colby Chester ... McCall
Regis Cordic ... Paul Chase
Joseph Cotten ... Weldon Rathbone

Brian Cutler ... Capt. Stevens
Carolyn Fromson ... Laura
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Vince Howard ... Lieutenant
Janet Julian ... Nancy Drew (as Janet Louise Johnson)
Jack Kelly ... Harry Hammond
Jeri Lea Ray ... Greata Delquist
Cathy Rigby ... Greta's Daughter
Pernell Roberts ... Fire Chief Madison
Robert Sampson ... Keller
William Schallert ... Carson Drew
Eric Server ... Robert Coleman
Amy Smika ... Sally

Season 2, Episode 22: Campus Terror

7 May 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Kario Salem ... Alice's Ex-Boyfriend

Stepfanie Kramer ... Jill Sommers
Derek Murcott ... Dr. David Llewellyn

Anthony De Longis ... Sergio Morse
Richard Collier ... Kaplan
Elissa Leeds ... Trudy
Diane Markoff ... 2nd Girl
Beth Nufer ... Gym Girl
Walter Klenhard ... Officer
Valerie Bertinelli ... Wendy Chase / Gwynn
Robin Blair ... 1st Girl
Bob Clark ... 2nd Biker
Bob Clark ... 2nd Biker

Nick Dimitri ... Gimp
Jack Ging ... Inspector Richards
Orwin C. Harvey ... 1st Biker
Kim Lankford ... Alice
Bud Walls ... Loud Guy

Season 3

Season 3, Episode 1: The Last Kiss of Summer: Part 1

2 October 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Harold Ayer ... Minister
Kevin Brophy ... Jocco Halsey
Helena Carroll ... Laura Taylor
Ed Gilbert ... Fenton Hardy
Vince Howard ... Officer Rogers
Kristian Jennifer ... 1st Volleyball Player
Jack Kelly ... Harry Hammond

Anne Lockhart ... Jess
Kathy McCullen ... Sharon
Betty Jean Samuelson ... 2nd Volleyball Player
Kevin Tighe ... Steve
Kristie Welch ... Jaimie (as Kristie Welsch)

Season 3, Episode 2: The Last Kiss of Summer: Part 2

8 October 1978

Kevin Brophy ... Jocco Halsey
Helena Carroll ... Laura Taylor
Sandy Charles ... 2nd Girl
Liberty Godshall ... 1st Girl

Anne Lockhart ... Jess
Kevin Tighe ... Steve

Season 3, Episode 3: Assault on the Tower

15 October 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)

Dana Andrews ... Townley
Victor Holchak ... Carstairs
James Booth ... Lt. Buckley
Leon Ames ... Messenger
Patrick Macnee ... S
Pernell Roberts ... Detective Superintendant Molly

Ian Abercrombie ... Sgt. Lander
Peter Ashton ... Wakefield

Season 3, Episode 4: Search for Atlantis

22 October 1978

Shaun Cassidy ... Joe Hardy
Parker Stevenson ... Frank Hardy
Ed Gilbert ... Fenton Hardy (as Edmund Gilbert)
Jack Kelly ... Harry Hammond
Darleen Carr ... Helena Martin
John Colicos ... Col. L. Morbius
Lloyd Nolan ... Professor Anton Hendricks

Duncan Gamble ... Skip McTeague

Gino Conforti ... Desk Clerk
Pamela Jean Bryant ... Jeanette
Peter Weiss ... Vittorio
Tanya George ... Serena, Greek Dancer
Kopi Sotiropulos ... Miklos

Season 3, Episode 5: Dangerous Waters

29 October 1978

T.J. Castronova ... Regis (as Tom Castronova)
Dane Clark
June Lockhart ... Mrs. Migley

Robert Loggia
Frank Marth
Tom Newman ... Phillipe

Austin Stoker ... Perfect
Maud Strand
Rebecca York ... Ria Thomas

Season 3, Episode 6: Scorpion's Sting

12 November 1978

Nina Axelrod
Macdonald Carey
Don Diamond ... Lt. Rogers
Walter Klenhard ... Smith
Robin Mattson ... Catherine Martin
Joseph Ruskin
Craig Stevens ... Alexander Cartel

Season 3, Episode 7: Defection to Paradise: Part 1

19 November 1978

Michael Botts
Edd Byrnes ... Paul Owens

Robert Feero ... Kellgyn
Pamela Franklin ... Marla
David Gates ... Himself
John Harrison ... Customs Official
Doug Heyes Jr. ... Jerry
Jack Kelly ... Harry Hammond
Lloyd Kino ... Lt. Andy Ho
Larry Knechtel

Eric Lawrence ... Vince Carroll

Nehemiah Persoff ... Vladimir
Bobby Van

Season 3, Episode 8: Defection to Paradise: Part 2

26 November 1978

Michael Botts
Edd Byrnes ... Paul Owens

Robert Feero ... Kellgyn
Pamela Franklin ... Marla
David Gates ... Himself
Jack Kelly ... Harry Hammond
Larry Knechtel

Eric Lawrence ... Vince Carroll
Blake Marion ... Doctor

Nehemiah Persoff ... Vladimir
Bobby Van

Season 3, Episode 9: Game Plan

3 December 1978

John DeRose ... Dice Player

Dennis Holahan ... Arthur Philips
Joseph La Cava ... Sam

Eric Lawrence ... Agent Vince Carroll
Patch Mackenzie ... Charlene
Nancy Morgan ... Special Agent Melanie Wilson
Robert Oram ... Mike Smith (as Robert E. Oram)
Jim Raymond ... Hank Colby
Mary Louise Weller ... Annie Metzger

Season 3, Episode 10: Life on the Line

14 January 1979

Ana Alicia ... Suzanne Clifford
Paul Coufos

Wally Crowder ... Thompson
Ben Hammer
Karen Lamm ... Debbie Lawford
Adam Roarke
Leonard Stone
Marvin Walters ... Fields

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