"Dude..." He made a face at that ruffle, even if he was too drowsy to really get too worked up about it. After Dean was out for the day, Sam got up to shower. He had time to kill before he could go do anything, so he spent it doing a little more research, making sure he had his facts straight before he headed out to meet with the detective.

Turned out Mary was a 19 year old girl, having an affair with someone who likely killed her but got away scot-free. She was cremated, but the mirror was returned to the family...

And apparently, the mirror was sold recently to a shop in Toledo.

That seemed more than enough to go on. He just had to wait for Dean to get up to tell him.