A detective in too deep. . .

Detective Lindsay Boxer investigates a methodical yet unpredictable series of shootings of the homeless in San Francisco. A tip from a confidential informant leads her to disturbing conclusions - something has gone very wrong inside the police department itself.

Lindsay's friends in the Women's Murder Club are concerned that she's taking the crimes too much to heart as the hunt for the killer lures Lindsay out of her jurisdiction - and into danger...