Kevin McCarthy
Role: Dr. Miles J. Bennell
Dana Wynter
Role: Becky Driscoll
King Donovan
Role: Jack Belicec
Carolyn Jones
Role: Theodora 'Teddy' Belicec
Larry Gates
Role: Dr. Dan 'Danny' Kauffman
Kenneth Patterson
Role: Stanley Driscoll
Virginia Christine
Role: Wilma Lentz
Jean Willes
Role: Nurse Sally Withers
Ralph Dumke
Role: Police Chief Nick Grivett
Guy Way
Role: Officer Sam Janzek
Bobby Clark
Role: Jimmy Grimaldi
Beatrice Maude
Role: Grandma Grimaldi
Whit Bissell
Role: Emergency Room Psychiatrist
Richard Deacon
Role: Emergency Room Doctor
Robert Osterloh
Role: Ambulance Attendant
Guy Rennie
Role: Restaurant Owner
Eileen Stevens
Role: Anne Grimaldi
Tom Fadden
Role: Uncle Ira Lentz
Jean Andren
Role: Eleda Lentz
Everett Glass
Role: Dr. Ed Pursey
Sam Peckinpah
Role: Charlie the Meter Reader
Dabbs Greer
Role: Mack Lomax
Marie Selland
Role: Martha Lomax
Harry J. Vejar
Role: Man carrying pods in Mile's office (extra)
J. Pat O'Malley
Role: Railroad Baggage Handler (extra)
Richard Deacon
Role: Dr. Harvey Bassett (uncredited)
Frank Hagney
Role: Townsman (uncredited)
Robert Osterloh
Role: Ambulance Driver (uncredited)