Four people--teen detective Matilda, her ex-con dad, and a retired cop and his genealogist wife--form an unofficial vigilante committee with the goal of bringing elusive criminals to justice, including the notorious serial killer referred to as the California Bear, who seems to have stopped killing 30 years ago.

Duane Swierczynski is the two-time Edgar-nominated author of ten novels including Revolver, Canary, as well as the graphic novel Breakneck, many of which are in development for film/TV. Most recently, Duane co-authored Lion & Lamb with James Patterson, and co-scripted James Patterson's The Guilty, an Audible Original starring John Lithgow and Bryce Dallas Howard. He lives in Southern California with his family.