Synopsis: Revelations (Plural)

Kit and Marshall's new roommate John is convinced that he is the author of the book of Revelation. John claims he was placed on this Earth by God to witness the end of times. He may be insane, but at least he doesn't use the oncoming apocalypse as an excuse to duck household chores.
John comes not only with a metaphorical bag of crazy, but also a (literal) briefcase full of cash and mysterious lab reports. Can the three roommates figure out what it all means before the world ends?