Riddle: A little girl named Sasha was left home alone with her butler, chef, and gardener. Sasha's parents went out on a date night and came home and found their daughter stabbed to death. The police questioned the chef first the gardener second and the butler last. The chef said, "I was in the kitchen preparing dinner for my little Sasha I would never do anything to hurt my princess". The gardener said, " I was outside working on the plants...I was about to come in and take a shower". And the butler said, " I was cleaning Sasha's room...I didn't even have a knife on me anyway so I couldn't of killed her". Automatically the cops knew who it was and arrested them. Who and How?
Answer: The butler because the cops never mentioned that she was stabbed with a knife.