Riddle Number Eleven A man was sitting at his fireplace when he heard a crash. He turned around and saw that someone had thrown a brick through his window. He could just make out the figure of a boy running away. He knew that the boy was one of the Crimson triplets - Paul, Mark, and Joe Crimson. But he couldn't figure out which triplet it was. The next day, he found a note on his doorstep. It read: "? Crimson. He broke your window." Immediately, the man knew who to interrogate. How did he know and who was it?