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Five thousand metres beneath the Pacific, structural engineer Mara Vance wakes in the dark to a dying station - and a pressure gauge that is lying to her.
She is not sinking. She is falling - through a hole in the floor of the ocean, into a dry cavern ten thousand feet deep that no map has ever recorded, and that someone has spent eleven years and one severed lifeline to keep buried.
Three hours of draining water. Two ruined hands. The laws of physics for an enemy. Far above her, the only man who believes she is still alive is about to break every rule he has left.
To survive the fall, she will have to build the impossible.
To survive the truth, she'll have to drag it up from the floor of the world.
A relentless, claustrophobic survival thriller for readers of Andy Weir, Michael Crichton, and Blake Crouch.
Abir Mukherjee
Abir Mukherjee is the London Times bestselling author of the Sam Wyndham series of crime novels set in Raj-era India, which have twice won the CWA Endeavour Dagger for best historical crime novel. His second novel, A Necessary Evil, won the Wilbur Smith Award. His third novel, Smoke and Ashes, was chosen by the Sunday Times as one of the 100 Best Crime & Thriller Novels since 1945.
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