In the series Bronson portrayed Mike Kovac, a former World War II combat photographer freelancing in New York City, who specialized in getting the photographs that other lensmen could not. He usually assisted newspapers, insurance companies, the police and private individuals, all of whom wanted a filmed record of an event.
By often acting as a private eye, Kovac gets himself into plenty of troubles involving criminals of every kind, helping with cases the police could not handle.
Besides an array of cameras for normal use, for surreptitious work Kovac employed cameras hidden in a radio, cigarette lighter and even his necktie. He also had a phone in his car, and a portable darkroom in the trunk where he could develop his negatives on the spot.
Kovac's police liaison was Lieutenant Donovan (James Flavin), though he frequently came for advice from Anton Kovac (Ludwig Stössel), his immigrant father.