When her children's school is set ablaze, Grace runs into the burning building to rescue her teenage daughter, Jenny. In the aftermath, badly injured, Grace learns the police have identified the arsonist, but they have blamed the wrong person. Only Detective Sarah McBride, the sister-in-law Grace has never liked, is searching for the real arsonist--a hunt that becomes urgent when it's clear Jenny is still the perpetrator's target.

Includes a reader's guide and an excerpt from Sister.