Charlton Heston

as Stewart Graff

Ava Gardner

as Remy Royce-Graff

George Kennedy

as Sgt. Lew Slade

Lorne Greene

as Sam Royce

Geneviève Bujold

as Denise Marshall

Richard Roundtree

as Miles Quade

Marjoe Gortner

as Jody

Barry Sullivan

as Dr. Willis Stockle