Texas Justice

Pamela Colloff: A FEW HOURS BEFORE DAWN ON A sticky summer night in Somerville, a one-stoplight town ninety miles northwest of Houston, police chief Jewel Fisher noticed the faint smell of burning wood. Fisher was following up on a late-night prowler call east of the main drag, in the predominantly black neighborhood that runs alongside the railroad tracks. Turning down the town's darkened streets, he suddenly caught sight of a house on fire and realized that he was looking at the home of 45-year-old Bobbie Davis, a supervisor at the Brenham State School. Flames climbed the walls and skittered along the roof of the one-story brick structure, casting a murky orange glow. The windows had…