Riley Sanders is a Salt Lake PD Homicide detective. Her father was a famous detective and she strives to live up to his reputation. Riley experiences a debilitating reaction to a strobe like light utilized by a Masked Man during a response to a distress call – she is found catatonic. She takes a leave of absence. Back on duty, Riley and new partner Paul Carr begin to investigate murders where someone is killing clinical phobics by restraining them and exposing them to their fears. Riley sees herself in the profiles of the victims and learns she is more involved in the case than she could have ever imagined. The investigation leads her to Dr. Elizabeth Holden, and an ongoing experimental trial in the treatment of phobias. Riley must figure out who is doing this and how it ties into her. The culmination of her investigations leads her to have an incredible, supernatural, transformative experience.