She thinks she knows the truth. But what if she's wrong?

Laila and her husband arrive for a week's holiday in Greece in desperate need of a reset.

As Laila sits by the pool she finds herself inexplicably drawn to the other family staying in their resort.

Em has no idea who Laila is, or that she has been watching her and her teenage sons and husband so intently.

Five days later their worlds will be blown apart by a horrifying event.

Laila thinks she knows the truth of what happened. But in telling Em what she's seen, she stands to lose everything she holds dear.

And what if she's got it wrong?

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Praise for THE OTHER GUEST:

'Heidi Perks has a gift for ratcheting up tension and suspense in her books, leaving this reader gasping for breath with the lights on in the middle of the night. Bravo!' Liz Nugent

'The Other Guest is a fantastic sun-soaked thriller with a gripping mystery at its heart. It's the perfect read to take on holiday - but just keep one eye on those other guests!' Lucy Clarke

'A twisty hot summer read in a location to die for. Literally!' Jane Corry

'I raced through this in a weekend. A taut, clever whodunnit, masterfully structured, beautifully written, with an intriguing cast and some heart-wrenching moral dilemmas. Brilliant.' Gilly Macmillan

'Pure, thrilling escapism. Whip-smart twists make this summer sizzler impossible to put down. The Other Guest is unforgettable' Chris Whitaker