Can anyone really stay hidden from the world? A powerful novel of solitude, survival, and psychological suspense from the author of Unravelling Alice . . .

For three years, Ida has been living in the remote Welsh countryside to stay safe from a world ravaged by illness. The only person she has contact with is Cal, her fiancee, who brings supplies and news about their crumbling society before returning to his military work.

When she wakes up in a stranger's hut after being injured in a fall, Ida panics about possible exposure to the virus. But she soon learns that the occupant, a mysterious man who is a recluse, is unlikely to be infected.

As the pair strike up a friendship, a series of shocking revelations will test Ida's trust. Will she have to take her survival into her own hands?