I used to work weekend nights and my wife would always be home alone with her car in the driveway. One particular Saturday, I was at work and my wife happened to go out with her friend. Her friend picked her up, so her car was still in the driveway. When I got home at 1:00 am, the power to the house was out. I went to check the circuit breaker and saw that the padlock on it had been cut. I promptly went inside and called 911. Here is the conclusion I have come to (though I'm open to alternatives). Someone had been watching us for a while and knew our habits. That Saturday, they saw her car in the driveway and my car gone. They cut the lock and threw the circuit breaker. This would have baited her outside. She would have been outside with the front door unlocked and quite vulnerable. I bought a nice bottle of wine for her friend and a shotgun for the house.