 Cancelled in 1973, it was the last survivor of the 1960s spy series  craze that had produced shows like  _"Man from U.N.C.L.E., The" (1964)_ (qv),  _"Danger Man" (1964)_ (qv), _"Get Smart" (1965)_ (qv),  _"Wild Wild West, The" (1965)_ (qv), etc.