Woman in Cabin 10

Travel journalist Lo Blacklock has landed the assignment of a lifetime: covering the maiden voyage of the Aurora Borealis, an exclusive luxury cruise liner sailing the Norwegian fjords to see the northern lights. It's the perfect escape, coming just after a terrifying break-in left her rattled, sleepless, and drinking too much.

Then, in the dead of night, Lo is woken by a scream and a splash. She's certain she saw a woman on the veranda of the neighbouring cabin — cabin 10 — and a smear of blood on the glass. But when she raises the alarm, every passenger and crew member is accounted for. Cabin 10, the crew insists, was never occupied. Trapped on a ship she cannot leave, doubted by everyone and increasingly unsure of her own mind, Lo has to decide whether she is unravelling or whether there's a killer on board.

The Woman in Cabin 10 is Ruth Ware's bestselling, claustrophobic psychological thriller and the first book to feature Lo Blacklock, whose story continues in The Woman in Suite 11.