"Shikar" marks the spectacular debut of Jack Warner. Totally absorbing, it is a thriller of verve, accomplishment, tension, and imaginative power. This is the kind of story that keeps us awake and reading into the early morning hours, makes us miss our stop, forces us to be late for appointments. "Shikar" pits Grady Brickhouse, sheriff of Harte County, Georgia, against an unlikely but fearsome opponent-a full-grown Bengal tiger that has somehow found...