The Mystery of Mr X. Word Search Puzzle Solver. The Mystery of Mr X word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. A sophisticated jewel thief tries to prove himself innocent of a string of cop murders. This includes identifying and searching for words that are related to : Comedy, Mystery, Robert Montgomery, Forrester Harvey, Lewis Stone, Crime, Ivan F Simpson, Henry Stephenson, Elizabeth Allan, Ralph Forbes, Leonard Mudie .