Alan York is a race horse jockey who sees his friend and chief rival jockey fall to his death during a steeplechase race. Alan knows it could not have been an accident. He pursues clues while meeting a lovely young lady and her fascinating uncle, until he finally discovers why his friend died... and why he is next to die.
After the train conductor Pētersons receives money transfer from an unknown source, he suspects foul play involving the cargo he's transporting. He decides to do his own investigation into the matter, not realizing that he's putting himself and those around him in danger.
Paul Madvig is a businessman in an American town in the 1920s, doing everything to maintain his power. He plans to marry Janet, the daughter of senator Ralph Henry who must be re-elected in order to ensure Paul's position. Paul is sure of himself and treats his competitor Shad O'Rory, who is involved in the gambling business, with arrogance. Then the senator's son is murdered. It is rumoured that Paul is behind the murder. Private detective Ned Beaumont, an old friend of Paul's, starts to investigate the case. Based on the novel "The Glass Key" by Dashiell Hammett.
