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, 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.
Baretta's car was a 1966 Chevy Impala.
Baretta's King Edward Hotel room number is 506 in the first season, and 2C in later seasons. Camera panning suggests it's on the SE side facing S Los Angeles St.
Was originally intended as a continuation of the TV series Toma, 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.
The actor who played the used car salesman was really hurt when he got roughed up by Timothy Carey. As a direct result of this, said actor sued the producers of the show through the Screen Actors' Guild.
The title is based upon a quote from William Shakespeare's play "King Lear" (Act I, Scene IV): "How sharper than a serpent's tooth it is to have a thankless child!"
In one of the most unusually cast segments of the series, ultra-violent drive-in movie star Cheri Caffaro (of the "Ginger" films, still popular as collected in DVD sets) makes a rare TV appearance as Blake's leading lady.