Irish ex-pat Daniel carries his wife Petra’s ashes on the Camino de Santiago pilgrimage. He finds a walking partner in Californian Ginny, who runs hot and cold, is stalked by a macabre creature, and loses the ability to differentiate between reality and hallucination, yet remains determined to release Petra’s ashes at the end. O’Cinneide brilliantly portrays an unreliable narrator—with Daniel more interesting than endearing, elusive supporting characters, and an ending that remains intriguing though unsurprising. I was fortunate to receive this well-written, well-researched supernatural historical fiction from the publisher Dundurn through NetGalley.