George Peppard

as Capt. Frank Matthews

Jean Seberg

as Adele Matthews

Richard Kiley

as Woodrow Wilson King

Charles McGraw

as Deputy Chief John P. Hildebrand

Madeleine Sherwood

as Mrs. Eileen Sanderson

Robert F. Lyons

as Paul Martin Sanderson

Frank Marth

as Lt. Smithson

Marj Dusay

as Liz Tennant