Mark and Randall descend into Hell to spend Halloween with Callie's infernal family. Leonard tries to find a suitable family to inhabit a fussy haunted house.
Abandoning his luxurious life of debauchery in the big city, Randall joins a zombie cult. Mark gives Department of Integration staffers psychiatric evaluations.
Mark helps a giant ape with obsessive-compulsive disorder find his dream job. Callie struggles with her sudden attraction to Twayne at the Atlantic City Demon Convention.
Mark walks a young lass and her vampire beau through the trials of love and proper vampire conversion, while "Larry King disease" ravages New York City.