The X-Files is returning with a new spin-off that will fill in the gaps between 2008 movie I Want To Believe and the recent revival series – and Digital Spy has your exclusive first look.

Full-cast audio drama The X-Files: Cold Cases has David Duchovny and Gillian Anderson reprising their roles as Mulder and Scully.

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Fox and Dana will be pitted against a terrifying creature known as the Flukeman, originally featured in season two's 'The Host'.

In the atmospheric new trailer, Mulder's in the sewers... and it sounds as though he's landed himself in some serious trouble.

Written by Dirk Maggs, with creative direction from series creator Chris Carter, Cold Cases is based on the graphic novels by Joe Harris.

FOX

When FBI headquarters suffer a data breach, an unknown group is able to access and capitalise on the investigations left unsolved by the secret department once known as The X-Files.

As friends and foes of the agency long-thought gone begin to inexplicably reappear, former agents Mulder and Scully come out of anonymity to tackle a growing conspiracy involving their former department, the US government and forces not of this world.

Other X-Files regulars who appear in the release include Mitch Pileggi as Walter Skinner, William B. Davis as the Cigarette Smoking Man and Tom Braidwood, Dean Haglund, and Bruce Harwood as beloved conspiracy theorists The Lone Gunmen.

The X-Files: Cold Cases is available now at www.audible.co.uk/xfiles.

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