A young mother is recuperating in a San Francisco hospital when she suddenly gasps for breath and dies. Doctors are completely mystified as other recovering patients inexplicably become deadly ill. Accompanyed by the newest member of the Women's Murder club, Yuki Castellano, Lieutenant Lindsay Boxer probes deeper into the deaths. Is a maniac playing God? When someone close to her begins to exhibit the same frightening symptoms, Lindsay fears no one is safe. But the hospital is determined to shield its reputation at all costs. And while it wages a court battle, Lindsay and the Women's Murder Club must hunt a merciless killer