It's Halloween, and Ruby is looking forward to a party at China Bayles' house and a busy holiday weekend at her New Age shop, the Crystal Cave. But her holiday plans are interrupted when Jessica Nelson, a crime reporter at the Pecan Springs Enterprise, shows up with a hard-to-believe story about a serial killer who is targeting the terminally ill. Jessica claims that the killer's calling card—a card picturing Azrael, the Angel of Death—comes from a deck Ruby once carried in her shop. But Jessica's story turns out to be true, and Ruby has to use her psychic ability to discover the killer's identity before he chooses another victim. When Detective Ethan Connors gets involved in the mystery, and when Jessica herself is threatened, Ruby's psychic abilities are put to the test in ways she could never have predicted. And at the same time, she finds herself falling in love with a detective who seems to know her better than she knows herself.