Knowing the truth isn't enough. Nessa's sister disappeared ten years ago. In all that time, Nessa has never once doubted her instincts.

She knows that this is one man's doing: her sister's ex has gotten away with an unspeakable crime. Questioning the story isn't allowed. Ruby - despite her idyllic childhood on the shores of Lake Champlain - has always been dogged by a sense of uncertainty.

The one question she longs to ask is the one she's forbidden to voice: What really happened to her mother?They both deserve answers. Nessa and Ruby will have to find each other - or risk being destroyed by the same tragedy that ripped them apart in the first place. The Blue Hour is an indelible tour de force from the Kate O'Brien Award and Irish Book Award-shortlisted author of A Crooked Tree