Life for Summer McCloud in the sleepy New England village of Ames is seamless—that is until the mysterious murder of a woman who visits Summer's occult shop, Tarot and Tea. The only clue is the book of poison recipes found in the woman's handbag—a book purchased from Summer the day before.

When the police suspect Summer, her carefully constructed world begins to unravel. Being a sleuth is something she loves but when ghosts from the past threaten to expose their secrets Summer must find a way out or lose everything, including her life.