What actors and actresses appeared in Unexpected Guest - 1947?

The film "Unexpected Guest" you are referring to is most likely the 1947 British mystery film "The Unexpected Guest", also known as "The Man Upstairs" in some releases.

Here are the main actors and actresses who appeared in that film:

* Richard Attenborough as Richard

* Anne Crawford as Laura

* Derek Farr as Michael

* Flora Robson as Jane

* Roland Culver as Gordon

* Margaret Lockwood as Sally

* Wilfrid Hyde-White as Inspector Thomas

There are also several supporting roles filled by other actors.

It's important to note that the 1947 film was a screen adaptation of the 1941 stage play "The Unexpected Guest" by Agatha Christie. While the basic story elements are the same, some characters and plot details were changed for the screen version.