Inheriting the New York City pub that has been in her family for generations, criminal psychologist and vigilante Kieran Finnegan clashes with FBI agent Craig Frasier during a jewelry store heist when she secretly returns a gem stolen by her brother.

"Grace Blades is a master psychologist, respected by her peers and adored by her patients. She is hard working and highly competent, a model of self-control. But in private, Grace indulges a secret thrill-seeking darkness, pursuing danger as an escape from the regimented life she's established. Closing her eyes as she flies down the Los Angeles freeway or targeting a stranger in a hotel bar for an anonymous moment of passion, Grace craves the rush....

When his cousin's business partner is found dead on an island he inherited, Special Agent Craig Frasier agrees to investigate with psychologist Kieran Finnegan and they discover that the property comes with strange lore and a blood-soaked past.

When a series of murders are connected with a shadowy psychology practice, Alex Delaware and Milo Sturgis must immerse themselves in a world of manipulation and unethical "therapeutic" practices. Delaware must bring his moral clarity to bear on these wrongs, and do his best to see them righted.