**In this #1 NYT bestseller, Sergeant Lindsay Boxer puts her life on
the line to protect San Francisco from a shrewd and unpredictable
killer.
**When a series of shootings exposes San Francisco to a mysterious
killer, a reluctant woman decides to put her trust in Sergeant Lindsay
Boxer. The confidential informant's tip leads Lindsay to a disturbing
conclusion: something has gone horribly wrong inside the police
department.
The hunt for the killer lures Lindsay out of her jurisdiction and
impacts her in dangerous ways. She suffers unsettling medical symptoms,
and her friends in the Women's Murder Club warn her against taking the
crimes to heart. But with lives at stake, the detective can't help but
follow the case into terrifying terrain.
A decorated officer, loving wife, devoted mother, and loyal friend,
Lindsay has always acted with unwavering integrity. But now she is
confronting a killer who is determined to undermine it all.