4. Dead Ringer

Ramon Sosa, was a former pro boxer who owned two gyms in Houston, Texas. He was on top of the world — until he learned someone was trying to hire a hit man to kill him. He came out fighting, helping police in an elaborate sting which meant he'd go down for the count in a most unusual way. "48 Hours" correspondent Peter Van Sant goes inside the twisted case of a man whose murder was ordered – and who lived to talk about it.