Fans of Sister Pelagia and the White Bulldog, the first book in Akunin's Pelagia trilogy, will be instantly mesmerized-and frightened-by this latest foray into Zavolzhsk' s spiritual underworld. In the middle of the night, a disheveled and badly frightened monk arrives at the doorstep of Bishop Mitrofanii of Zavolzhsk, crying: "Something's wrong at the Hermitage " The Hermitage is the centuries-old island monastery of New Ararat,...