Henry Silva as Johnny Cool / Salvatore Giordano

Elizabeth Montgomery as Darien 'Dare' Guiness

Richard Anderson as Correspondent

Jim Backus as Louis Murphy

Joey Bishop as Holmes, Used Car Salesman

Brad Dexter as Lennart Crandall

Wanda Hendrix as Miss Connolly

Hank Henry as Larry, Bus Driver

Marc Lawrence as Johnny Colini

John McGiver as Oscar B. 'Oby' Hinds

Gregory Morton as Jerry March

Mort Sahl as Ben Morrow

Telly Savalas as Vincenzo 'Vince' Santangelo

Joan Staley as Suzy Blakely

Sammy Davis Jr. as Educated

Elisha Cook Jr. as Underworld Leader

John Dierkes as Cripple

Frank Albertson as Bill Blakely

Katharine Bard as Mrs. Crandall

Steve Peck as Kromlein

Joe Turkel as Hoodlum

Elvia Allman as Beauty Salon Receptionist

Robert Armstrong as Underworld Leader

George Cisar as George, a Bartender

Mary Scott as

Douglas Henderson as

Douglass Dumbrille as

Joseph Calleia as

George N. Neise as

Maria Andre as

Hal Baylor as

Chris Willow Bird as

Alex Bookston as

Boyd Cabeen as

Bill Catching as

Jimmy Cross as

Tony Dante as

Michael Davis as

Bruno Della Santina as

Ken DuMain as

George Eldredge as

James W. Gavin as

Art Gilmore as

Bill Hickman as

George Holmes as

Clegg Hoyt as

Edward Innes as

Matty Jordan as

Ray Kellogg as

Pete Kooy as

Joseph La Cava as

Margie Liszt as

Carmelo Manto as

Peter Miller as

Ralph Montgomery as

Sol Murgi as

Elizabeth Perry as

Eddie Rosson as

Pat Rosson as

Cosmo Sardo as

Sammy Shack as

Mario Siletti as

Theresa Testa as

Kelly Thordsen as

Victoria Vetri as

Guy Way as

Frank Wilcox as