"PSI: Blue is intoxicating in its wicked tendencies. Characters that beg to be explored and saved, weaved into a story that is hauntingly evil in nature. There is no escaping the hypnotic talent of this writing master."
– Okeechobee Book Reviews 

"PSI: Blue is laugh out loud funny and creepy at once! Walker's created a terrific character; ranks up there with Carl Hiassen and Janet Evonovich for sheer nerve. What happens in this book should not happen even to a fictitious person, but Rae Murphy Hiyakawa is up to the challenge! She's all woman and a hell of a psychic detective. Makes TV's Medium look like child's play."
– J.A. Konrath, author Rusty Nail, a Jack Daniels Mystery