The Russian was ill-advisedly descending a slimy twelfth-century staircase into his own shadow. A flickering orange trapezoid was projected onto the floor from above, skating back and forth like a leaf coming down from a tree. It could be inferred that Mr. Kikin’s associate, who was too tall to enter the crypt, was standing in the antechamber at the top of the stairs waving a torch around, trying to get the light around his master’s shoulders.