Murder She Said (1961)

Who is the blonde in the box?
Comedy / Crime / Drama / Mystery • 87 minutes  7.4/10
Starring: Margaret Rutherford Arthur Kennedy Muriel Pavlow James Robertson Justice Thorley Walters Charles Tingwell Conrad Phillips Ronald Howard and others.
Director: George Pollock Screenplay: David D. Osborn David Pursall Jack Seddon Director of Photography: Geoffrey Faithfull Producer: George H. Brown Editor: Ernest Walter Original Music Composer: Ron Goodwin
Released • January 1, 1961

When Miss Marple reports witnessing a murder through the window of a passing train, the police dismiss her as a dotty spinster when no trace of the crime can be found.

A.K.A. BR: Quem Viu Quem Matou?  DE: 16 Uhr 50 ab Paddington  DK: 4.50 fra Paddington  ES: El tren de las 4:50  FR: Le train de 16h50  PT: Quem Viu Quem Matou  RU: В 16-50 из Паддингтона  US: Agatha Christie: Murder She Said