Plot Summary:Considered one of the most violent television series of its era, this show followed the adventures of Los Angeles, California private investigator Joe Mannix, who first worked for a detective agency known as Intertect, which relied heavily on computers and a large network of operatives. In the second season, Mannix opened his own agency, with police widow Peggy Fair working for him as his secretary. Each episode featured plenty of fistfights, car chases, and shoot-outs.
During the 1972-73 season Mannix's car (a 1973 Plymouth Cuda convertible) were actually three 1971 models updated (by changing the grill/headlights, hood, and taillights panel) to look like a 1973 Cuda, as Plymouth no longer made the Cuda as a convertible, and driving a convertible had been a Mannix trademark since the show began.