Dracula: The Un-Dead (Stoker's Dracula #2)

A sequel cowritten by Bram Stoker's great-grandnephew and based on the original author's handwritten notes takes place twenty-five years later and finds Van Helsing's morphine-addicted protégé obsessed with countering evil forces and Quincey Harker learning disturbing truths about his parents' dark secrets in the wake of several murders.