A young man was watching the local news while he ate breakfast one day in 2004, when a story about a savage murder came on. At first, the young man wasn’t paying close attention – the murder happened more than 100 miles away – but then a picture of the victim flashed across the screen. And the young man froze in shock. Slowly, he put down his spoon, abandoned his breakfast, and ran to his computer. He booted it up and started frantically searching through the chat logs of an old conversation. And after a few minutes, he found it. The young man printed the logs out, and called the police.