David Soul (as Ben Mears), James Mason (as Richard K. Straker), Lance Kerwin (as Mark Petrie), Bonnie Bedelia (as Susan Norton), Lew Ayres (as Jason Berk), Julie Cobb (as Bonnie Sawyer), Elisha Cook Jr. (as Gordon 'Weasel' Phillips (as Elisha Cook)), George Dzundza (as Cullen "Cully" Sawyer), Ed Flanders (as Dr. William 'Bill' Norton), Clarissa Kaye-Mason (as Majorie Glick (as Clarissa Kaye)), Geoffrey Lewis (as Mike Ryerson), Barney McFadden (as Ned Tebbets), Kenneth McMillan (as Constable Parkins Gillespie), Fred Willard (as Larry Crockett), Marie Windsor (as Eva Miller)

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