Edinburgh is basking in an unnaturally warm winter until the snow starts falling. When a student disappears, along with his climate research, and the national government close down all communications, Professor Finlay Hamilton realises there is a link between his own research into dark matter and the freak weather. Suddenly he is in a desperate race to save his wife, Jess, and their young family from a catastrophic event. His only help is a man from Jess's past, a past he never knew existed. Under the relentless snowfall, only the strong will survive - and Jess must be strong enough to keep her family safe.

When a distillery owner's body is discovered on top of a remote Scottish mountain, forensics confirm that he died of natural causes. DI Corstophine's concerns are raised however, when the dead's man eccentric sister receives a message, apparently from the beyond the grave. The police are dismissive until it appears the devil himself is intent on attacking other family members. Why is his daughter kept locked and sedated in her room in the baronial mansion? Who or what is stalking his son as he scatters his father's ashes on lonely summits? And what insanity is behind the horrific attacks in their small Highland town? DI Corstophine and his team don't know what they're facing until it's too late. Following on from the success of Whirligig, The Devil's Cut is a story about what constitutes sanity and how delicate that state really is; how such a perfect emotion as love can completely destroy a man.