What We Can Know In a world submerged by rising seas, can the secrets of the past be discovered? The breathtaking Sunday Times bestseller. 'Full of wisdom and heart. I loved it' Elif Shafak

What We Can Know In a world submerged by rising seas, can the secrets of the past be discovered? The breathtaking Sunday Times bestseller. 'Full of wisdom and heart. I loved it' Elif Shafak

'A gripping page-turner' Observer'It gave me so much pleasure' * New York Times 2014:A great poem is read aloud and never heard again. For generations, people speculate about its message. 2119:* With the UK's lowlands submerged by rising seas, those who survive are haunted by all that has been lost.

Tom Metcalfe, a university scholar, pores over the archives of the early twenty-first century. When he stumbles across a clue that may lead to the lost poem, he reveals a story of entangled love and a brutal crime that challenges everything he thought he knew about the past.