Glenn Ford as Richard Dadier

Anne Francis as Ann Dadier

Louis Calhern as Jim Murdock

Margaret Hayes as Lois Judby Hammond

John Hoyt as Mr. Warneke

Richard Kiley as Joshua Y. Edwards

Emile Meyer as Mr. Halloran

Warner Anderson as Dr. Bradley

Basil Ruysdael as Prof. A.R. Kraal

Sidney Poitier as Gregory W. Miller

Vic Morrow as Artie West

Dan Terranova as Belazi

Rafael Campos as Pete V. Morales

Paul Mazursky as Emmanuel Stoker

Horace McMahon as Detective

Jamie Farr as Santini

Danny Dennis as De Lica

David Alpert as Lou Savoldi (uncredited)

Jimmy Ames as Man (uncredited)

Dwayne Avery as Student (uncredited)

Ben Avila as Student (uncredited)

Henny Backus as Miss Brady (uncredited)

Doyle Baker as Wilson (uncredited)

Beau Buchanan as Student (uncredited)

Benny Burt as Bartender (uncredited)

Joan Danton as Irate Mother (uncredited)

Valentin de Vargas as Latino Student (uncredited)

Richard Deacon as Mr. Stanley (uncredited)

Gary Diamond as Child (uncredited)

James Drury as Hospital Attendant (uncredited)

Del Erickson as Student (uncredited)

John Erman as Daly (uncredited)

Robert Foulk as George Katz (uncredited)

Jack Gargan as Electrician (uncredited)

Enzo Giobbe as Student (uncredited)

Chuck Hicks as Applicant (uncredited)

Paul Hoffman as Mr. Lefkowitz (uncredited)

Teddy Infuhr as Needles (uncredited)

Tommy Ivo as Frightened Student (uncredited)

Ike Jones as Mechanic (uncredited)

Nikki Juston as Woman (uncredited)

Kenner G. Kemp as Italian Restaurant Patron (uncredited)

Carl Kress as Peewee (uncredited)

Mickey Little as Boy on Bus (uncredited)

Tom McKee as Manners (uncredited)

Jerry Mickelsen as Krauss (uncredited)

Peter Miller as Joe Murray (uncredited)

Jimmy Murphy as Frank Adams (uncredited)

Dorothy Neumann as Miss Panucci (uncredited)

Manuel París as Italian Restaurant Proprietor (uncredited)

Virginia Pherrin as Teacher in Lounge (uncredited)

Chris Randall as Levy (uncredited)

William Rhinehart as Man (uncredited)

Steven Roberts as Boy on Bus (uncredited)

Willard Sage as Radio Announcer (voice) (uncredited)

B.W. Sandefur as Student (uncredited)

Emil Sitka as Father (uncredited)

Bobby Somers as Student (uncredited)

Lee Stanley as Kid (uncredited)

Steve Stevens as Boy on Bus (uncredited)

Yoshihiro Tomita as Tomita (uncredited)

Skip Torgerson as Boy on Bus (uncredited)

Arthur Tovey as Bystander at Accident Scene (uncredited)

Martha Wentworth as Mrs. Brophy (uncredited)

Jerry Wynne as Murphy (uncredited)