(written from a Production point of view)
He has also appeared on such television series as Ben Casey, Combat!, Bonanza, Mission: Impossible, and Land of the Giants. His film credits include The Buccaneer (1958), The Slender Thread (1965, with Jason Wingreen), the 1973 TV movie The Stranger (starring Glenn Corbett) and Sharon Acker), and the 1978 horror movie The Swarm. He also appeared in the 1980 film When Time Ran Out..., directed by James Goldstone.
Marlo died peacefully at the age of 92 in Everett, Washington.