Sound design work intended to convince the audience that they are watching an authentic zombie movie trailer.

Post house: Envy

Client: 4 Creative

How it was done: Senior dubbing mixer Rich Martin created the sound using a number of layers. Martin tried to match the sound with the jerky, disorientating nature of the pictures. Sound effects used included metallic screeches and birds' wings flapping.

Watch it: This month on Film 4 and Sky Movies from 14 September.