World of Giants full-sized partner, Agent Bill Winters. Thompson set up the premise in the show's opening voiceover: "World of Giants" was produced by Ziv Television Programs, the company responsible for such hit TV series as "Highway Patrol", "Sea Hunt", and "Bat Masterson". Not a success, this series only lasted through its initial production order of 13 episodes. Thompson later went on to star in the (much more) successful CBS TV series "Daktari" (1966-1969). Nearly a decade later, in 1968, a similarly-themed Irwin Allen TV series, entitled "Land of the Giants", starring Gary Conway and Don Marshall, ran on ABC. Two years prior
Land of the Giants the part of Dan Ericson, credited his previous football, track and pole vaulting work for helping him with the stunts required. Elements of Allen's "Lost in Space" series recur in "Land of the Giants", notably the relationship between foolish, greedy, on-the-run bank robber Alexander B. Fitzhugh (Kurt Kasznar) and the young boy Barry Lockridge (Stefan Arngrim), paralleling the relationship on "Lost in Space" between Doctor Smith and the young Will Robinson. Also, for main cast billing, Kasznar was treated contractually in the same manner as Jonathan Harris had been on "Lost In Space": billed in last place on the opening