Five people inadvertently enter an underground base and run into a nightmare scenario.

Production company: Paperknife Productions

Producer: Ish Jalal

Associate Producer: Terry Stone for Gateway Films

Backers: Private financiers

Budget: $1m

Director: Asham Kamboj

Screenplay: Asham Kamboj

Cast: Danny Dyer, Kierston Wareing, Emily Beecham, Jimi Mistry

Shooting dates: 3 weeks in October

Locations: Pinewood and in and around Buckinghamshire

Contact: Nicola Gregory, unit publicist: