The Juggernaut (1915)

Back in college John Ballard saved Philip Hardins life Twenty years later John is the district attorney and Philip is president of a railroad notorious for its accident record When John brings a suit against the railroad Philip threatens to reveal a ruinous secret about John unless he drops the case Meanwhile a railroad inspector discovers that the trestle over which an express train carrying Philips daughter is about to pass is in eminent danger of collapse