What actors and actresses appeared in The Tyburn Case - 1957?

You are likely thinking of a film called "The Case of the Scarlet Scissors" (1957), also known as "The Tyburn Case" in some regions.

The main cast members for this film are:

* David Niven as Inspector "Max" Clifford

* Glynis Johns as Helen "Bunny" Blenkiron

* Leo Genn as Lord Blenkiron

* Herbert Lom as Anthony "Tony" Blenkiron

Let me know if you have any other questions!