"The best Paula Hawkins yet - by a tense and haunting mile." - Lee Child

"An atmospheric, stylish puzzle box of a thriller... truly exceptional." - Liz Moore, New York Times bestselling author of The God of the Woods

"A masterful exploration of the nature of obsession...I loved it." - Angie Kim, New York Times bestselling author of Happiness Falls and Miracle Creek

The propulsive and powerful new novel from the #1 New York Times bestselling author of The Girl on the Train

Welcome to Eris: an island with only one house, one inhabitant, one way out. Unreachable from the Scottish mainland for twelve hours each day.

Once home to Vanessa: A famous artist whose notoriously unfaithful husband disappeared twenty years ago.

Now home to Grace: A solitary creature of the tides, content in her own isolation.

But when a shocking discovery is made in an art gallery far away in London, a visitor comes calling.

And the secrets of Eris threaten to emerge....

A masterful novel that is as page-turning as it is unsettling, The Blue Hour recalls the sophisticated suspense of Shirley Jackson and Patricia Highsmith and cements Hawkins's place among the very best of our most nuanced and stylish storytellers.

"Atmospheric and marvelously twisty." - Danya Kukafka, author of Notes on an Execution

"Reminiscent of du Maurier: art, islands, missing spouses ... Hard to put down." - Mick Herron

"A masterpiece! Gorgeous and chilling." - Shari Lapena