Jim Hutton

as Leonard Dean

as Joe Reese

as David

as Paul Mitchell

as Self

as Arnold James Masters

as Ellery Queen

as Ellery Queen

as Greg Leyden

as Stanley Broadhurst

as Alex Farnham

as Self

as Jonathan Calder

as Doug Selby, D.A.

as Cpl. Bill Lukens

as Cliff

as Martin's father

as John

as Greg Parker

as Mike

as Sgt. Petersen

as Harry Lucas

as Matt Black

as Steve Davis

as Mr. Petrie (uncredited)

as Charlie Clinton

as Capt. Paul Slater

as Lieutenant Graham

as Paul Davis

as Man in Rowboat with Radio (uncredited)

as George Haverstick

as Second Lt. Merle Wye

as Self

as Larry Delavane

as Jason Eldridge

as TV Thompson

as Adam Moovad

as Major William Gart

as Workman at Bomb Site

as Hirschland

as Self

as Self