Thirty years after destroying her detective father's career and altering the lives of everyone she loves, Rachel, who has never given up hope of vindicating her father, finally finds The Sunset Strangler, a killer who, in the summer of 1979, preyed on young women in northern California.

Single mother Billie August is frustrated with her boss and sleuthing mentor, the gruff, perpetually dissatisfied Emma Howe. So far, their relationship has been a personal and professional disaster. To top it off, Billie seems like the only person in town who thinks mentally disabled Gavin Riddock, accused of killing his only friend, might not be guilty, but her inability to turn up any hard evidence could cost Gavin everything. Now, illness at home...