X: The Unknown Word Search Puzzle – Search Characters, Actors and Actresses. Word Search Puzzle Solver. After a mysterious explosion leaves a large fissure in the ground, two young boys are confronted by an unknown phenomenon that inflicts severe radiation burns on one of them. There follows a spate of attacks at radiation establishments as the inexplicable life-form plunders radium stores. Dr Royston, an expert in atomic research, is brought in to explain and curtail the activities of this alien creature before it causes disaster. Find out the following actor, actress, character names, and other movie-related words hidden in this word search puzzle based on this movie.. This includes identifying and searching for words that are related to : Old Tom, Russell, The Vicar, Dr. Kelly, Jane Aird, Leo McKern, John Stone, Ian Osborn, Vi Harding, Neil Wilson, Dean Jagger, Pvt. Haggis, Brown Derby, John Harvey, Kenneth Cope .