Edmond O'Brien as Frank Bigelow

Pamela Britton as Paula Gibson

Luther Adler as Majak

Beverly Garland as Miss Foster

Lynn Baggett as Mrs. Philips

William Ching as Halliday

Henry Hart as Stanley Philips

Neville Brand as Chester

Laurette Luez as Marla Rakubian

Jess Kirkpatrick as Sam

Cay Forester as Sue

Frank Jaquet as Dr. Matson

Lawrence Dobkin as Dr. Schaefer

Frank Gerstle as Dr. MacDonald

Carol Hughes as Kitty

Michael Ross as Dave

Donna Sanborn as Nurse

Harold Miller as Man in Hallway (uncredited)

Sam Harris as Man at Fisherman Table (uncredited)

George Lynn as Homicide Detective (uncredited)

Phillip Pine as Angelo (uncredited)

Bill Baldwin as St. Francis Hotel Desk Clerk (uncredited)

Teddy Buckner as Club Trumpeter (uncredited)

Frank Cady as Eddie - Bartender (uncredited)

Roy Engel as Police Captain (uncredited)

Douglas Evans as Eddie - Salesman on Phone (uncredited)

Virginia Lee as Jeanie (uncredited)

Peter Leeds as Leo - Bartender (uncredited)

Hugh O'Brian as Jazz Fan (uncredited)

Jerry Paris as Bellhop (uncredited)

Lynne Roberts as Jane Carlyle (uncredited)

Ivan Triesault as Photographer (uncredited)

Beverly Warren as Girl at Hotel Room Party (uncredited)

Jadie Carson as Bandleader (uncredited)

Shifty Henry as Club Bassist (uncredited)

David Jansen as Bellhop (uncredited)

Ray Laurie as Club Pianist (uncredited)

Van Streeter as Club Saxophonist (uncredited)

Cake Witchard as Club Drummer (uncredited)