
Hayley Mills
Ellie Thomsen
Acting

Hywel Bennett
Michael Rogers
Acting

Per Oscarsson
Santonix
Acting

George Sanders
Andrew Lippincott
Acting

Aubrey Richards
Dr. Philpott
Acting
![Ann Way]()
Ann Way
Mrs. Philpott
Acting

Patience Collier
Miss Townsend
Acting

David Bauer
Uncle Frank
Acting

Helen Horton
Aunt Beth
Acting
![Madge Ryan]()
Madge Ryan
Michael's Mother
Acting

Windsor Davies
Sgt. Keene
Acting

Walter Gotell
Constantine
Acting

Geoffrey Chater
Coroner
Acting
![Robert Keegan]()
Robert Keegan
Innkeeper
Acting
![Robert A. O'Neil]()
Robert A. O'Neil
Broker
Acting
![Mischa De La Motte]()
Mischa De La Motte
Maynard
Acting

Nicholas Courtney
Second Auctioneer (uncredited)
Acting

Leo Genn
Psychiatrist (uncredited)
Acting
![Charlie Gray]()
Charlie Gray
Man at Auction (uncredited)
Acting
![Victor Harrington]()
Victor Harrington
Man at Auction (uncredited)
Acting
![Stephanie Mildenhall]()
Stephanie Mildenhall
Child (uncredited)
Acting

Jim Brady
Workman (uncredited)
Acting
![Joe Phelps]()
Joe Phelps
Police Officer at Inquest (uncredited)
Acting

Ewan Roberts
Customer at Petrol Station (uncredited)
Acting
![Reg Thomason]()
Reg Thomason
Doctor in Rembrandt Painting Mock-up (uncredited)
Acting
![Steven Wallen]()
Steven Wallen
Young Michael (uncredited)
Acting

Russell Waters
Waiter (uncredited)
Acting