At long last, Ars ne Lupin sets his sights on the fourth and final secret of Cagliostro: the God-Stone of the Kings of Bohemia, a miraculous stone that has the power "to give life and death," hidden on the island of Sarek, nicknamed the "Island of the Thirty Coffins" because of its barrier of deadly reefs. In The Island of the Thirty Coffins (1919), Ars ne Lupin is summoned back to France in May 1917 by one of his friends and travels to the accursed...