'A troubling, hammering and glorious novel' DAVID MITCHELL On the edge of the Antarctic Circle, in the years after World War One, a steamship approaches a desolate island. On board is a young man on his way to assume the post of weather observer, to live in solitude for a year at the end of the earth. But on shore he finds no trace of the man whom he has been sent to replace, just a deranged castaway who has witnessed a horror he refuses to name. The rest is woods, a deserted cabin, rocks, silence and the surrounding sea. Then night begins to fall . . .

It is 1914. In the heart of the Belgian Congo, Garvey, a bedraggled British manservant, emerges from the jungle. He is the lone survivor of a mining expedition in which both his masters have died, and all of the party's African porters have fled. With him, he carries two huge diamonds. From his prison cell in London, Garvey recounts his horrific and thrilling ordeal. Young Tommy Thomson is assigned to transcribe Garvey's story and only he can untangle the extraordinary mysteries of the Garvey case.