Sadie didn't believe in ghosts, until she became one. When pragmatic physician and budding researcher, Sadie Crawford, goes for a hike, she didn’t imagine she would die on the trail. She definitely didn’t imagine she would become a ghost. Rather than idling lingering on Earth, she focuses on finding her killer. Uncovering the truth means asking for help from her psychic ex-boyfriend—the one she dumped because she hadn’t believed in his supernatural abilities. Recruiting Asher Brenner plunges him into danger as Sadie's search for answers becomes a race to stop a killer. Will they find the murderer before another victim falls?