Linebacker Eric Naposki signed with the New England Patriots in 1988, playing there before being traded to the Indianapolis Colts. He got a lot more playing time when he switched over to the World League of American Football (later renamed NFL Europe), helping lead the awesomely-named Barcelona Dragons to a World Bowl title in 1997.
But since 2011, he’s spent his post-playing days behind bars for a crime committed way back in 1994. At that time, he was seeing a woman named Nanette Packard, who was also dating a man named William McLaughlin. She was the beneficiary of McLaughlin’s $1 million life insurance policy, which paid out when he was found dead in his home, shot six times. Packard was charged and imprisoned (she’d written herself hundreds of checks out of McLaughlin’s account, which is the reddest of red flags), but police lacked evidence to definitively tie Naposki to the murder. However, they later discovered new evidence linking Naposki to the killings. He was charged in 2009 with being the trigger man, convicted, and in 2011 was sentenced to life without parole.