Following a violent outburst at an awards ceremony, Vidor, a prize-winning neuroscientist and Cambridge don, is sent to an isolated psychiatric clinic in the Swiss Alps.

Vidor claims to have no memory of the incident as the director of the clinic, Dr Anton Gessen, tries to unearth the reason behind his erratic behaviour. After one of Gessen's other patients goes missing, Gessen has reason to doubt Vidor's innocence.

To complicate matters, Gessen is certain he has met Vidor before.

Can he piece everything together before it's too late?

'Completely engrossing' Katherine Webb