Waterstones have produced a special edition of Ruth Ware’s The Turn of the Key, with sprayed edges. Pick up a signed copy while stocks last here for just £10.99.

To celebrate and promote the deal, Waterstones also released a “Shelfie” video in which Ruth walks around Waterstones Piccadilly talking about her work in relation to works on the shelves. Watch the full thing here.

Find Ruth on Twitter @RuthWareWriter.