In just about two months, Century 21 has become arguably the most entertaining realty brand advertising online and in social media. With agency Mullen, it advertised Walter White's Albuquerque home on Craiglist, invited world leaders to a summit in Sunnyvale and now, the brand joins the growing list of advertisers who are adding a bit of terror to their marketing mix this season with this series of online films. A series of spooky shorts show "found" security footage of different homes after the lights have gone off at night. The films reveal hauntings of various kinds -- whether a gremlin in a toybox, a specter with a shoe fetish or a pet-friendly poltergeist (see them all to the right).

The point is, of course, that even if your house is haunted, Century21 has the chops to sell it.

The entire project was shot in a day at the home of Mullen GCD Tim Cawley, who has a bit of the horror in his bones after working on two scary shorts in the past, Big Day of Fishing and Well-Founded Concerns.