Hard pressed single mother Sally Wilson struggles to deal with her lifelimited daughters condition. Amanda has a brain tumour and will die within months without radical surgery which is only available in America at huge cost. So it is with amazement that Sally is invited to attend the offices of high-class London Solicitor Peter Taylor, to hear that she has been bequeathed five million pounds by an anonymous benefactor. It seems too good to be true and indeed it is. The bequest is dependent upon one secret condition that Sally kills a man who deserves to die.