What actors and actresses appeared in Whispering Smith Hits London - 1952?

The 1952 film you're referring to is actually called "Whispering Smith", not "Whispering Smith Hits London". It stars:

* Alan Ladd as Whispering Smith

* Brenda Marshall as Ellie

* Richard Carlson as Jack

* Murvyn Vye as Morgan

It's a Western film, and the story revolves around a mysterious gunfighter who arrives in a town to clear his name and confront the man who framed him for murder.