Larkwood Priory, England: Father Anselm is stopped by an old man. What, he is asked, should a man do when the world has turned against him? Anselm's response: claim sanctuary. But the answer sets off more trouble than he ever could have imagined when the man returns, demanding the protection of the Church. He is Eduard Schwermann, a suspected Nazi war criminal.

Agnes Aubret has unburdened a secret to her granddaughter Lucy. Fifty years earlier, Agnes was in occupied Paris, risking her life to smuggle Jewish children to safety-until her group was exposed by an SS officer: Eduard Schwermann.

Not only has the Church granted Schwermann sanctuary before; in 1944 it helped him escape from France to begin a new life in Britain. As Anselm attempts to find out why and as Lucy delves deeper into her grandmother's past, their investigations dovetail to form a remarkable story.

William Brodrick makes a dazzling debut in this literary thriller where two seemingly unconnected lives gradually, shockingly converge. Brodrick, himself a former Augustinian friar, is a master of precision plotting, morally complex characterization, and crisp historical re-creation. In Father Anselm, Brodrick has crafted a unique and compelling hero. And The 6th Lamentation promises to be the literary thriller discovery of the season.

• fiction