I know that The First 48 isn't supposed to make you laugh, but
I just saw an episode where a little girl woke up to find her mother alone and strangled. She told the cops that her boyfriend had been there when she'd gone to bed. She didn't know his last name, and there were no photos of him around the house. She started to describe him, and then said, "We went to the store yesterday -- they have pictures." So they went to the store, got the surviellence tape, found a nice closeup of the guy, and had him in custody within the first twenty-four. If that girl hadn't thought of that, they'd probably still be looking for him!