Heartbreaker is the most character driven book I have read, possibly ever. Here’s the kicker. One of the most essential characters is the setting of the book: The Territory. Turning the setting, remnants of cult in the 1980s, down to one original member, into an essential character of the book is no easy task but Dey does it without skipping a beat. She does it by using the Territory to fill the spaces between heartbeats with a chilling frost that doesn’t let go and keeps you guessing until the end.