Europe, 1940: Posing as a friar, a British operative talks his way into the monastery at Villers-devant-Orval just before Nazi art thieves sweep through the area. But the ersatz man of the cloth is no thief. Instead, he adds an old leather Bible to the monastery's library and then escapes. London, 2017: A construction worker makes a grisly discovery - a skeletal arm-bone with a rusty handcuff attached to the wrist. The woman who will put these two disparate events together is Russian historian and former Soviet chess champion Larissa Mendelovg Klimt, "Lara the Bookworm, " to her friends.