Given the question: Combine facts and answer this: Martin Miller, born Rudolph Muller, was a Czech-Austrian character actor who played many small roles in British films and television series from the early 1940s until his death, on stage he was noted in particular for his parodies of Mr. Paravinci in which murder mystery play by Agatha Christie, and opened in London's West End in 1952, and has been running continuously since then?
The answer is:
The Mousetrap