* FROM THE AUTHOR OF SUNDAY TIMES CRIME BOOK OF THE MONTH, BREATHLESS, COMES A SPINE-TINGLING AND GRIPPING NEW THRILLER, NOW AVAILABLE FOR PRE-ORDER! *

With her life back in London falling apart, Olivia cannot believe her luck when she's invited on a once-in-a-lifetime Antarctic cruise with her boyfriend, Aaron.

Olivia has never been anywhere so spectacular: huge cliffs of ice loom high on the horizon, penguins dive through the sparkling sea, and above it all, the sun never sets in the eerie twilight sky.

And then Aaron disappears. And a body is discovered on board.

Surrounded by strangers, Olivia has no idea who she can trust.

And if she can't figure it out soon, she won't make it back alive...

Praise for Amy McCulloch:

'A high-altitude, high-stakes thriller. I loved it' MATT HAIG'Had me on the edge of my seat. A must read' SARAH PEARSE'Suffocatingly tense, highly original and exhilarating' DAILY EXPRESS'Tense, chilling and terrifying' CLAIRE DOUGLAS'An addictive, tightly plotted thriller that will leave you chilled to the bone' LUCY CLARKE'Chilling, vivid and entirely unique' ABIGAIL DEAN 'A real page-turner. Tense, terrifying and fascinating in equal measure' CATHERINE COOPER'A truly terrifying thriller with a tense and twisty plot. Superbly executed' ALLIE REYNOLDS