Iron Maze.

In Corinth, a dying town 15 miles from Pittsburgh: One evening, a Japanese businessman, who wanted to tear down the closed iron mills to build an amusement park, is found half dead in his mill. Bellboy Barry admits to have done it - in self defense. Chief Ruhle interrogates him and Sugito's young wife and business partners, but it takes a while, until he gets through the maze of apparently contradictory statements.