The Last Party by Clare Mackintosh

Set against the backdrop of a picturesque lakeside community, this gripping mystery unravels the secrets and lies hidden beneath the surface of a seemingly idyllic New Year's Eve celebration. When a local celebrity is found dead, the investigation reveals a tangled web of relationships and past grievances among the residents. As the story unfolds, the line between friend and foe blurs, and the truth becomes more elusive, leading to a shocking revelation that challenges perceptions of trust and betrayal.

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