chunk: While they had anticipated a trap, Harkonnen's traitor within House Atreides, Dr. Wellington Yueh, Duke Leto's personal physician, has disabled critical shields and has destroyed their sonic weapons, leaving them nearly defenseless. In the attack, Idaho is killed, Leto is captured, and nearly all of House Atreides is wiped out. While captured, Leto dies in a failed attempt to assassinate the Baron Harkonnen using a poison gas capsule planted in his tooth by Dr. Yueh, who is double-crossed by Baron Harkonnnen and executed by Rabban. However, Leto's concubine Lady Jessica and his son Paul survive the attack and are able to escape into the deep desert, where they discover a siectch of Fremen, led by Stilgar. Paul and Jessica are taken in by the Fremen; Jessica becomes their Reverend Mother, and Paul falls in love with Chani, a Fremen warrior he'd previously seen in one of his visions.