"Grace Blades is a master psychologist, respected by her peers and adored by her patients. She is hardworking 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....

After a night of indiscriminate partying, Rachel sleeps with a close friend's fiancé and is consumed with guilt, until the intensity of her feelings forces her to make a difficult choice.