When a little girl is shot on the steps of a San Francisco church, Detective Lindsay Boxer knows it's time to reconvene the 'Women's Murder Club'. Working with reporter Cindy Thomas, assistant DA Jill Bernhardt, and medical examiner Claire Washburn, Lindsay tracks a mystifying killer who soon turns his pursuers into his victims. The unorthodox allegiances of the 'Women's Murder Club' leads them to suspect the unexpected - the killer may be an ex-cop. But nothing could prepare them for the demented logic behind his choice of victims.