The cover has been unveiled for David Mitchell's forthcoming novel, Slade House.

Slade House, which inhabits the same universe as Mitchell's latest bestseller The Bone Clocks, started out as a short story the British author published on Twitter last year.

It tells a thrilling tale that opens in 1979 and tumbles towards a climax on Halloween 2015, days after the book will be published in the UK.

Mitchell experimented with Twitter as a storytelling platform in 2014 to release The Right Sort ahead of the publication of The Bone Clocks, and is returning to the social media for Slade House.

He will begin a new Twitter story from the perspective of one of the characters in Slade House from early September until October 27, when the short story is published, allowing people to follow one person's journey to the mysterious building's front door.

What happens to him there, only Slade House can reveal.

The cover of David Mitchell's new novel, Slade House

Mitchell released The Bone Clocks in 2014, when it was longlisted for the Man Booker Prize. The novel followed the twists and turns in the life of Holly Sykes, from her scarred adolescence in Gravesend to old age on Ireland’s Atlantic coast – a life not so far out of the ordinary, yet punctuated by flashes of precognition, visits from people who emerged from thin air and brief lapses in the laws of reality.