BAD DAY AT BLACK ROCK (1955) Never underestimate a one-armed man. Or a lousy movie title

One blazingly hot day, a one-armed stranger dressed almost comically in tie, white shirt and rumpled black suit deboards off a train in a pothole-of-a town in Arizona, and thus begins a suspenseful movie called BAD DAY AT BLACK ROCK – and for both the stranger and blue-jeaned townspeople, a very bad day indeed. Determined to solve the mystery of the town's missing citizen, a Japanese man, government man John J. Macreedy (Spencer Tracy) quickly discovers in various unpleasant ways how equally determined the town is to prevent his doing so. Risking life and remaining limbs at the four hands of two very nasty town bullies (Lee Marvin, Ernest Borgnine), McCready winds up arresting half the town and re-energizing hope to the other half. Watch for the barroom scene when McCready is forced to reveal his karate moves.