OJ Simpson was so jealous that his ex-wife Nicole Brown had moved on from their relationship that he paid notorious Mafia gangsters to kill her, a key police witness has claimed. Last week, MailOnline revealed the same witness placed OJ Simpson at the scene of the horrific double murder of Nicole Brown, 35, and her friend Ron Goldman, 25, on June 12, 1994. Nicole was stabbed seven times in the neck and scalp. It was such a violent attack that when was found lying in a pool of blood in the fetal position, she was nearly decapitated. However, with the...