Imagine...meeting someone with the same name, the same history, the same family, the same identity as you. Now, imagine meeting another person making the same exact claim. What would that do to you?

From the Giller Prize–winning novelist of 419 comes the startling, funny, and heartbreaking story of a psychological experiment gone wrong.

Ever since his girlfriend ended their relationship, Thomas Rosanoff’s life has been on a downward spiral. A gifted med student, he has spent his entire adulthood struggling to escape the legacy of his father, an esteemed psychiatrist who used him as a test subject when he was a boy. Thomas lived his entire young life as the “Boy in the Box,” watched by researchers behind two-way glass.

But now the tables have turned. Thomas is the researcher, and his subjects are three homeless men, all of whom claim to be messiahs—but no three people can be the one and only saviour of the world. Thomas is determined to “cure” the three men of their delusions, and in so doing save his career—and maybe even his love life. But when Thomas’s father intervenes in the experiment, events spin out of control, and Thomas must confront the voices he hears in the labyrinth of his own mind.

The Shoe on the Roof is an explosively imaginative tour de force, a novel that questions our definitions of sanity and madness, while exploring the magical reality that lies just beyond the world of scientific fact.