What actors and actresses appeared in Here Lies Miss Sabry - 1960?

The film you're referring to is likely called "Here Lies Miss Sabry" (1960), and it's also known as "The Black Room". The main cast includes:

* Richard Johnson as Dr. David Bruce

* Gena Rowlands as Sabry

* Martin Benson as Charles Lambert

* John Le Mesurier as The Doctor

* Michael Gough as Mr. Langton

* Sheila Hancock as Sylvia

* Betty McDowall as Mrs. Lambert

* Geoffrey Keen as Ackerley

There are many other supporting actors in the film, but these are the primary leads.