Two volumes of Leto's Journals, stolen from the Citadel in 13712 by Siona Ibn Fuad al Seyefa Atreides For nearly two millennia, these volumes provided the only autobiographical data avail able on Leto II, the God Emperor Their theft by Siona, daughter of Moneo Atreides, was a daring exploit, no others had ever breached the Citadel defenses and escaped alive But the price she and her companions paid for the Stolen Journals and the Citadel plans was high Of ten rebels, only Siona survived The others were brought down by Leto's patrolling D-wolves before they could reach safety across the Idaho River Only one bitter satisfaction was given each of them as he or she was dragged down each had been injected with Nyilatm, a drug harmless to humans but thought to be poisonous to the highly inbred D-wolves If one of them fell to the animals, it might at least decrease the pack pursuing Jhe rest Only Siona was able to discover that it worked and only by deduction rather than direct observation The rebels believed they found the books STOLEN JOURNALS 484 STOLEN JOURNALS by chance But knowing now that Nayla, one of Siona's most intimate confidantes, was actually an agent of Leto, this seems unlikely Nayla undoubtedly informed her master that the rebels intended to infiltrate die Citadel and sttal a copy of its plans for later use But Leto, with his nduhan crystals, had no need of the less permanent plasfevellum copies The plastivellum, lighter than conventional paper copies, was several times heavier than the crystal ongmals, and the factor of weight suggests another theory Did Leto plant the volumes near the Citadel plans, knowing that Siona and her group were planning to steal them'' Many of his references to Siona in other volumes indicate that he constantly tested her, usually without her knowledge Since he knew the raid was coming, he may have seen the venture as a test of another sort it