Lawrence persuades Auda abu Tayi, the leader of the powerful local Howeitat tribe, to turn against the Turks. Lawrence's scheme is almost derailed when one of Ali's men kills one of Auda's because of a blood feud. Since retaliation by the Howeitat would shatter the fragile alliance, Lawrence declares that he will execute the murderer himself. Lawrence is then stunned to discover that the culprit is Gasim, the man whom he risked his own life to save in the desert, but Lawrence shoots him anyway.