Distribution

• Van Heflin — Fred Staples
• Everett Sloane — Walter Ramsey
• Ed Begley — Bill Briggs
• Beatrice Straight — Nancy Staples
• Elizabeth Wilson — Marge Fleming
• Joanna Roos — Margaret Lanier
• Valerie Cossart — Martha Stevens
• Eleni Kiamos — Sylvia Trammel
• Ronnie Welsh — Paul Briggs
• Shirley Standlee — Miss Hill
• Andrew Duggan — Harvey Jameson
• Jack Livesey — D.J. Vandeventer
• John Seymour — Ed Gordon
• Sally Gracie — Ann
• Sally Chamberlin — Mrs. Jameson
• Edward Binns — Elevator Starter
• James Kelly — Jim Latham
• John Shelly — Edgar Grannigan
• Victor Harrison — Carl Portier
• Ethel Britton — Woman (uncredited)
• Michael Dreyfuss — Billy (uncredited)
• Elaine Kaye — Second Secretary (uncredited)
• Adrienne Moore — First Secretary (uncredited)

Réalisation

• Fielder Cook — director
• Charles H. Maguire — assistant director
• Marie Kenney — continuity

Montage

• James F. Barclay — assistant editor
• Dave Kummins — editor
• Carl Lerner — editor

Production

• Max Glandbard — production manager
• Jim Di Gangi — unit manager
• Michael Myerberg — producer
• Jed Harris — producer

Scénario

• Rod Serling — screenplay
• Rod Serling — original story

Son

• Richard Gramaglia — sound engineer

Image

• Morris Hartzband — camera operator
• Boris Kaufman — director of photography

Direction artistique

• Duane McKinney — production design
• Richard Sylbert — art direction

Costumes et maquillage

• Mary Merrill — costume design
• Herman Buchman — makeup artist