Unless zombie gravedigger Gwen Dylan eats a dead person's brain once a month, she loses her memories. The trouble is, for the week following a feeding, she shares her head with the dead person's final thoughts and has to complete any unfinished business they've left behind. In this case, it involves solving the murder of Dead Fred. Meanwhile, Gwen's friend Spot is finding it increasingly difficult to keep his secret life as a were-terrier from his coworkers…