When a group of young women working in London's sex trade become involved in a murder investigation, they come up with a story which results in the wrong person being convicted. Now, twenty years later, that person is out of jail - and somebody has started killing the women involved in the case. With the threat of blackmail hanging over them, the remaining women arrange a meeting - but it's anyone's guess if they will all make it there alive... Stymied by the complex relationships between the people in the case, DCI Banham is perplexed - and his personal life isn't offering any respite, for he's rapidly falling for his deputy, Sergeant Grainger - a woman who does not want to mix her private and professional lives.