It was a typical Wednesday morning when Mr. Whiskers, the beloved cat of Mrs. Snuggles, vanished without a trace. His empty food dish and litter box were the only clues left behind, leading Mrs. Snuggles to speculate that he had taken a long nap on the other side of the couch, and she would never know for sure. But as the days passed, strange things began to occur in the house. Doors would slam shut on their own, and the sound of purring could be heard late at night. Mrs. Snuggles was convinced that Mr. Whiskers had returned, but she knew deep down that he was gone forever. Please provide the rewritten story in approximately 100 words or less.