When Gabriel Flaherty plunges to his death from a cliff in suspicious circumstances, it is left to his brother Michael, a priest from New York, to return home to The Island and uncover what has happened.

Michael finds his childhood home much changed. With the opening of a factory, the sea that had given the islanders their livelihoods, as well as claiming so many of their lives, is no longer paramount. But along with steadier incomes and easier lives, the factory has brought suspicion and jealousy.

Whilst confronting his past - his estranged father, the old priest who shaped his life and his first love - Michael uncovers an intricate, far-reaching web of evil that touches everyone he knows.

But when the close-knit islanders realise the full extent of what is going on, they unite to avenge their own, seeking justice of a different kind. As the net tightens, they hold their breath, waiting to see who will survive...