An underhand solicitor receives threatening notes, and the police are called in to protect him.
Herbert Lom
as Maurice Meister
Donald Wolfit
as Dr. Lomond
Mai Zetterling
as Lisa
Greta Gynt
as Cora Ann Milton
William Hartnell
as Sam Hackett
Norman Wooland
as Inspector Bliss
Denholm Elliott
as John Lemley
Dora Bryan
as Mrs. Hackett
Charles Victor
as Inspector Wembury
Walter Fitzgerald
as Commissioner
John Stuart
as Gardener
John Slater
as Bell
