After personal conflictions with the star Robert Blake on the set, co-star Dana Elcar was replaced by Edward Grover when the series returned for its second season.
Was originally intended as a continuation of the TV series "Toma" (1973), with Robert Blake replacing Tony Musante as Det. David Toma. When Blake balked at taking over an established role, a new series was created for him instead.
Rooster's real name is revealed to be Quentin.
The theme song "Keep Your Eye On The Sparrow" was initially instrumental. In later seasons lyrics were added that were sung by Sammy Davis, Jr.