Thin Air by Ann Cleeves is the 6th Shetland Island mystery, in which Detective Jimmy Perez investigates the case of a vacationing woman who disappeared into the mist (available May 5, 2015).
A group of old university friends leave the bright lights of London and travel to Shetland to celebrate the marriage of one of their friends. But, one of them, Eleanor, disappears—apparently into thin air. It's mid-summer, a time of light nights and unexpected mists. And then Eleanor's body is discovered lying in a small loch close to the cliff edge.
Detectives Jimmy Perez and Willow Reeves are dispatched to investigate. Before she went missing, Eleanor claimed to have seen the ghost of a local child who drowned in the 1920s. Her interest in the ghost had seemed unhealthy—obsessive, even—to her friends: an indication of a troubled mind. But Jimmy and Willow are convinced that there is more to Eleanor's death than they first thought.
Is there a secret that lies behind the myth? One so shocking that someone would kill—many years later—to protect?
The music started. A single chord played on fiddle and accordion, a breathless moment of silence when the scene was fixed in Polly’s head like a photograph, and then the Meoness community hall was jumping. Polly had spent thirteen hours on the overnight boat from Aberdeen to Lerwick and when she’d first come ashore the ground had seemed to shift under her feet, and this was another kind of illusion. The music appeared to bounce from the walls and the floor and to push people towards the centre of the room, to lift them onto their feet. Even the home-made bunting and the balloons strung from the rafters seemed to dance. The band’s rhythm set toes tapping and heads nodding. Children in party clothes clapped and elderly relatives clambered from their chairs to join in. A young mother jiggled a baby on her knee. Lowrie took the hand of his new bride, Caroline, and led her onto the dance floor to show her off to his family once more.