Tommy(既是警探Taylor的线人,也是枪支贩子Dr.Wills的司机)作为百万英镑凶杀案的唯一证人,在一家中国餐厅描述案发经过给警探Taylor,关于Dr.Wills的死,以及意外出现的陌生男子。但是，他说的又是不是真的呢？
Tommy is a double agent, who is not only selling information to detective Eddie but also drives for a dangerous gun dealer, DR. Wills. As a only witness of one-million-pounds related murder, Tommy describes what happened that night, how did DR. Wills die and who is another secret guy to Eddie, but what he says maybe not true.