The critically acclaimed novel, and the greatest unsolved mystery of polar exploration.

Longlisted for the Walter Scott Prize for Historical Fiction 2017.

From Booker-Longlisted Ed O'Loughlin: The Perfect Novel For Fans Of Amy Sackvilles's The Still Point And Francis Spufford's I May Be Some Time.

It begins with a chance encounter at the top of the world.

Fay Morgan and Nelson Nilsson have each arrived in Inuvik, Canada - 120 miles north of the Arctic Circle - searching for answers about a family member: Nelson for his estranged older brother, Fay for her disappeared grandfather. They soon learn that these two men have an unexpected link - a hidden share in one of the greatest enduring mysteries of polar exploration.

'Ed O'Loughlin is a skilled cartographer of both the Arctic and the human heart. What a magnificent novel' Ron Rash

'A brilliant paean to the obsessions of the polar explorers . . . stupendously good' Australian

'Vastly entertaining' Sunday Times