Cassandra O'Grady has the unwanted gift of being able to see ghosts. For most of her life she's kept human interactions to a minimum and avoided befriending the living, choosing to be friends with her ghostly companions. In Death Does Not Become Her, she learns there are people, living people, who care for her, and will do what they can to protect her. She may not appreciate the connection at first, but if things work out, she might learn how to create friendships that will aid her in her destiny.

In the meantime, she still has Davis, her brother, Abel, and her deceased family dog, Frodo, to help, and she's going to need every bit of help she can get when one of her classmates from college comes to her in spirit form asking for help.

Mia Stone may not be a ghost; yet, but she is on her way to becoming one as her body suffers in a poison-induced coma. Cassie and her ghostly friends race against the clock to discover the mysteries surrounding the poisoning, and ritualistic killings related to Mia's attempted murder in hopes of finding the cure that will save her from dying - for real.