Jack has just been acquitted of manslaughter and regales his girlfriend Maggie and their neighbours with a disparaging account of the trial. According to the evidence (most of it Jack's) the victim Philip Mercer had broken in late at night and on being confronted by Jack produced a gun which Jack got hold of during the ensuing struggle and then used to kill Mercer. A clear case of self-defence. Or was it?2 women 2 men