Property of the Giants can be a hourlong American science fiction television program lasting two seasons beginning on September 22, 1968, and end on March 22, 1970. Irwin Allen made and produced the show. Property of the Giants was the fourth largest of Allen's science fiction television series. The show had been aired on ABC and published from 20th Century Fox Television. The series conducted for 51 episodes and was filmed entirely in color. The show starred Gary Conway and Don Marshall. Author Murray Leinster wrote three books in 1969 and 1968 predicated on the television series.