Daisy Darker by Alice Feeney

In a gripping tale of suspense and mystery, a fractured family gathers at their grandmother's isolated, gothic mansion on a remote island to celebrate her 80th birthday. As the clock strikes midnight, the matriarch is found dead, setting off a chilling chain of events. Trapped by the rising tide, the family members must confront their dark secrets and unravel the truth as they are picked off one by one. With each passing hour, the tension escalates, revealing hidden motives and long-buried grudges in a race against time to uncover the killer among them.

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