Unquiet grave. Dervla McTiernan. 2025.

For years the boglands of Northern Europe have given up bodies of the long-deceased. Bodies that are thousands of years old, uncannily preserved. Bodies with strange injuries that suggest ritual torture and human sacrifice.

when a corpse is found in. Bog in Galway, detective Cormac Reilly assumes the find is historical. But closer examination reveals that the man is Thackleus Grey, a local secondary school principal who disappeared red two years before.

There’s nothing in Grey’s past that would explain why he was murdered, or why his body was mutilated in a ritual manner. Cormac is certain he is closing in on the killer when he is thrown off course by an unexpected plea for help from his ex-girlfriend Emma, whose new husband has gone missing in Paris. Then another mutilate body is discovered on the other side of the country. Two days later, a third body is found. Press attention is intense.

Is there a serial killer at work in Ireland? Has Cormac been on the wrong trail? And if so, can he find the murderer before they strike again?