Still reeling from her husband's betrayal, Lindsay Boxer investigates a wave of possibly unnatural heart attacks claiming the lives of seemingly unrelated victims while assisting the prosecution of a bomber with a hostile defense team.

With a beautiful baby daughter and a devoted husband, Detective Lindsay Boxer can safely say that her life has never been better. In fact (for a change), things seem to be going well for all the members of the Women's Murder Club as they gather to celebrate San Francisco Medical Examiner Claire Washburn's birthday. But the party is cut short when Lindsay is called to a gruesome crime scene, where a woman has been murdered in broad daylight. As Lindsay...

"22 seconds...until Lindsay Boxer loses her badge--or her life. SFPD Sergeant Lindsay Boxer has guns on her mind. There's buzz of a last-ditch shipment of drugs and weapons crossing the Mexican border ahead of new restrictive gun laws. Before Lindsay can act, her top informant tips her to a case that hits disturbingly close to home. Former cops. Professional hits. All with the same warning scrawled on their bodies: You talk, you die. Now it's Lindsay's...