THE SUNDAY TIMES BESTSELLER. The new pulse-pounding and unputdownable thriller from the author of the number one bestseller THE COUPLE NEXT DOOR, and A STRANGER IN THE HOUSE.

'Tense. Unpredictable. Unputdownable. Shari Lapena's novels are domestic noir at its finest' Simon Kernick

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We can't choose the strangers we meet.

As the guests arrive at beautiful, remote Mitchell's Inn, they're all looking forward to a relaxing weekend deep in the forest, miles from anywhere. They watch their fellow guests with interest, from a polite distance.

Usually we can avoid the people who make us nervous, make us afraid.

With a violent storm raging, the group finds itself completely cut off from the outside world. Nobody can get in - or out. And then the first body is found . . . and the horrifying truth comes to light. There's a killer among them - and nowhere to run.

Until we find ourselves in a situation we can't escape. Trapped.

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'If you want an unputdownable thriller, you're in luck - best-seller Shari Lapena is back with a new whodunnit . . . Crafted like a vintage Christie and just as tense, this will be a smash hit' Heat

'[An Unwanted Guest] once again shows her gift for smart characterisation combined with a subtle appreciation for the darkness of the human heart . . . A perfectly choreographed danse macabre' Mail on Sunday

'Shari Lapena combines the cosy feel and cunning plotting of an Agatha Christie-era whodunnit with a sharp eye for contemporary life and she is rapidly becoming a go-to author for anyone seeking a light but lip-smacking mystery' Sunday Express

'The psychological thrillers of Lapena are masterclasses in tightly plotted, economical narrative...This third novel has a premise straight out of a Agatha Christie classic' Metro

'An excellent mystery! Agatha Christie meets P D James' Ragnar Jonasson

Readers love Shari Lapena:

'Best book I've read in ages'

'5* fast paced, twisting thriller'

'The pace never let up'

'On the edge of my seat to the end'

'I haven't picked up a book in 9 years and I'm so glad that I picked this up! I loved it.'

'Incredibly readable and unputdownable'

'Very clever, well written, intriguing and suspenseful'

'Had me hooked from start to finish'