A suspense book I THINK was based in the UK in a seaside town. A family (mum, dad, son and daughter) go on holiday and a teenage boy falls for the daughter and they all get invited to his aunt's house. I read it a few years ago.

[Keeley]

Read within the last few years but not entirely sure it was newly released.

[Keeley]

*SPOILER*






something happens on the beach at the end, I think? And the boy has a party at his aunt's and the girls family go looking for her, concerned.