'Outstanding ... Haughton writes vividly about a claustrophobic community ... her novel really is a superlative locked-room mystery' - Sunday Times (Crime Book of the Month)

'Haughton has created a fantastically atmospheric setting ... it's a chilling race to the finish to discover whodunnit' - Observer

In the most inhospitable environment - cut off from the rest of the world -there's a killer on the loose.

A&E doctor Kate North has been knocked out of her orbit by a personal tragedy. So when she's offered the opportunity to be an emergency replacement at the UN research station in Antarctica, she jumps at the chance. The previous doctor, Jean-Luc, died in a tragic accident while out on the ice. The move seems an ideal solution for Kate: no one knows about her past; no one is checking up on her. But as total darkness descends for the winter, she begins to suspect that Jean-Luc's death wasn't accidental at all.

And the more questions she asks, the more dangerous it becomes . . .

'A sense of growing menace pervades ... the freezing wasteland and claustrophobic workings of the research station are finely rendered' - Financial Times

'The kind of heart-pounding, sleep-stealing read that you want to recommend to everyone you meet. An absolutely thrilling book' - CASS GREEN

'Chilling and atmospheric . . . had me turning the pages late into the night' - MARK EDWARDS

'Tense, thrilling and unpredictable, with one of the most unique and dangerous settings imaginable' - ALLIE REYNOLDS

'Set against the dangerous sub-zero temperatures end endless night of the Antarctic...Brilliantly atmospheric and terrifying' - CATHERINE COOPER

'Tense, twisted and quite literally chilling - a locked room mystery in a unique setting where no one can be trusted' - SUSI HOLLIDAY

'Atmospheric, original and full of tension' - AMANDA JENNINGS

'A real edge-of-the-seat plot. I loved it. Original and accomplished' - J.A. CORRIGAN