 In 1955, Dark was cast in an episode of the NBC western anthology series, "Frontier", hosted by Walter Coy.Dark guest starred on two episodes of the ABC religion anthology series, "Crossroads", as Irving Green in "The Unholy Trio (1955) and as Frank Corletto in "Circus Priest" (1956).In 1956, Dark appeared in two episodes of "Science Fiction Theatre", S2E6 "Bullet Proof," and S2E9 "End of Tomorrow."