Natural Causes (Sam Tate Mystery Series, #5)

Nature Abhors a Vacuum. One Killer Is Filling It With Bodies

Three years after quitting her job as a homicide cop, Sam moves to Denver as a named partner with a boutique private investigation firm. She's finished with the violence and trauma that have marked both her personal and professional lives. But when a zealous eco-terrorist starts leaving bodies all across Colorado, Sam finds herself once again chasing a serial killer who may be targeting her.