Mark and Randall go down to Hell to spend Halloween with Callie's family, who have some special plans for Mark.
Mark tries to help Leonard with his wand issues, disastrously; Twayne meets his soulmate.
Mark has to deal with a clingy new roommate after Randall leaves to join a zombie cult.
Grimes' goon squad prevents a handsome young vampire from biting his human girlfriend, and the two are put under Mark's care until they can undergo a proper vampire conversion. Unfortunately, the young woman turns out to be Grimes' daughter, and he will stop at nothing to prevent her from becoming a hated bloodsucker. Mark is reluctantly caught in the middle of this family crisis, and although he initially rejects Grimes unabashed prejudice, a strange citywide epidemic causes him to have some doubts...