In February of 1935, two young Irishmen walk in the grounds of a London mental hospital. Arthur Bourne, a junior psychiatrist, is about to jeopardise his future for his closest friend, an aspiring writer called Louis Molyneux.

Arthur has been overshadowed since childhood by his brilliant, troubled friend. But after years of playing the unassuming companion, he is learning that loyalty has its costs: that old friendship may thwart new love, and perhaps even blur distinctions between the sane and the mad . . .

Jott is a story about friendship, madness and modernism from the author of the Man Booker-longlisted Communion Town.