Mum & Dad, the impressive debut feature by writer-director Steven Sheil, is one of the most disturbing Brit-shockers to emerge in recent years.

When Lena, a young Polish immigrant working as an office cleaner at Heathrow Airport, misses her last bus home, she accepts an offer of help from friendly co-worker Birdie, who lives nearby with her 'adoptive' parents.

Knocked unconscious after arriving at the house, Lena soon finds herself imprisoned in a suburban House of Horrors, a living nightmare of abuse, torture and murder. Designated a 'Mummy's Girl', Lena's only options appear to be to become part of the family - and join Mum and Dad in their insanity - or die.

View the trailer below. Viewer discretion is advised:

Available on DVD on May 5. Extras include:

Director and Producer Commentary
Cast and Crew Q&A at Film4 FrightFest 2008
'Through a Vulture Eye' - A short film by Steven Sheil
On-set Film London interviews with cast and crew
Interview with director Steven Sheil
Behind-the-scenes footage
The News Vault Feature
Theatrical Trailer