But nothing can prepare her when the victim is her former SFPD partner, Warren Jacobi.

A top detective until the end, Jacobi managed to leave Lindsay a clue.

The killer mounts a spree that strikes both coasts before returning to San Francisco.

Armed with little more than a dying man's last words, Lindsay must protect the people and the city she loves most.
Sergeant Lindsay Boxer's friend and former partner is brutally murdered in San Francisco's Golden Gate Park.

SFPD homicide detective Lindsay Boxer knows her way around a crime scene.

But nothing can prepare her for the shock of recognition: the victim is Warren Jacobi, Lindsay's onetime partner who rose to chief of police.

A top investigator until the end, Jacobi managed to leave Lindsay a clue.

Following a trail of evidence along the west coast, the Women's Murder Club pledges to avenge Jacobi's death before the killer can take another one of their own.