Rachel meets Sean's son, who turns out to be an eight-year-old version of his dad, and the idea of becoming a stepmum puts her further off the idea of marriage than she was before - not that she even agreed in the first place. Andy asks Janet out for a drink, but when she turns him down he accuses her of leading him on. A woman in a sexy cop's uniform turns up dead, and the DCI assumes the killer was her lover - the question is, which one of her many lovers was it? And to add to the mystery, why was her face painted green?