Human heads. The first time you panicked. How would you explain coming to possess a decapitated human head? No one would believe Kitty Wan Kenobi brought it to you. So, you did the sensible thing, and buried it in the back garden. The weeks passed no one came knocking, you didn't see anything on the news, so you relaxed. After all, surveillance cameras don't pay any attention to cats.

Then you came out to get coffee one morning, and there was another one on the kitchen floor. This time, a child's.