Phoebe Marks, a reluctant medium, is called on to investigate a mysterious death in a haunted mansion. And there she finds one angry ghost. Nora makes all the other angry ghosts Phoebe’s faced look like Casper. Not that Phoebe can blame poor Nora—although the girl was said to be well-liked, it seems like everyone who knew her had a reason to want her dead. As Phoebe delves deeper into the investigation, she finds a second murder to solve: who killed the mansion's previous owner? With the help of her familiar, Sean, his brother, C-list actor Morgan O'Hanlon, and her best friend Gia's book club, Phoebe gets closer to cracking both cases. But the closer she gets to the truth, the closer she comes to the same danger that claimed Nora’s life. Can Phoebe help another ghost rest in peace? Or is she about to join her?