Cannon is really a CBS detective tv show produced by Quinn Martin that aired from March 26, 1971. The protagonist is the name character detective Frank Cannon, played with William Conrad. In addition, he appeared on two episodes of Barnaby Jones. Cannon is your Quinn Martin-produced string to be aired on a system other than ABC. A"revival" tv film, The Return of Frank Cannon, was aired on November 1, 1980. Altogether, there were 124 episodes.