"Three for Danger" (1967) was another unsold pilot but they wrote an episode of "Ironside" and "The Danny Thomas Hour", and enjoyed great success as writers and producers for "Mannix" (1968–75) from its second season onwards, overseeing significant changes on the show. A profile of Goff and Roberts from 1968 said that "the rapport between the producers is quite apparent. One complements the other. One will back off if the other makes a point more succinctly. Goff, perhaps a touch more serious in manner, speaks with an Aussie accent. Roberts is a quick talker and has a laugh slightly reminiscent of Ed Wynn's."