The first footage from Conjuring spin-off The Nun  isn’t the only exclusive trailer which this weekend’s FrightFest debuted. Ahead of the UK premiere of The Villainess, a concept teaser for Eitan Arrusi’s Crypt screened to attendees, and (via Dread Central) the footage – a self-contained pre-production short film – is now online. Watch it below:

A devastating explosion traps workers deep in the tunnels under London. Jed and his team of salvage and rescue experts are called in to save them. What they uncover is a secret that has lain dormant for thousands of years. Now, trapped underground, their only mission is survival.

Crypt goes into production soon, with release plans to be announced.