In a small town, Mr. Kellen, a billionaire, took shelter from the ongoing hurricane in a small hotel. That night he was hit on the head in his room. He was the only customer that night. A Detective questioned the staff. The Receptionist: Mr. Kellen is a rich man. He only stopped here because his car broke down. Last night I was looking for someone to fix his car. The Janitor: The power was out all night, due to the hurricane. I was in the basement for two hours. Trying to fix the generator. The Maid: Mr. Kellen called housekeeping from his room phone. He was very worried about the blackout. He did not want to be disturbed and he did not want breakfast in the morning. Who attacked Mr. Kellen?