Here's something you don't see everyday: the trailer for a pilot that never made it to series. In this case, Locke & Key, the comic book adaptation that Fox put together with original writer Joe Hill (Stephen King's son), Josh Friedman and director Mark Romanek.
Starring Nick Stahl and Miranda Otto, Locke & Key follows three children who come to a New England mansion and learn of the dangerous secrets that lie within. Before you say Narnia, though, note that the secrets in this mansion deal with a creepy/scary girl at the bottom of a well, and some weird supernatural flourishes. It looks pretty scary, though whether Key could sustain a series commitment is still questionable.
The trailer is one that Fox showed advertisers before passing on the show; watch it above before it gets yanked.