Riddle: A rich and famous man died on Sunday. A detective came to the house. He first asked the maid what she had been doing on Sunday. She replied, "I was cooking and cleaning all day." The detective then asked the butler what he had been doing. He said, "I went to go pick up the mail, and then I came home." The detective then asked the limo driver what he had been doing. He said, "I was out on a date with my girlfriend. I had the day off." Who did it?