More mile-a-minute action with the stunt ace Richard Talmadge playing the loafer son of a shipbuilder facing financial ruin. Bob Stuart takes charge of the company's development of a new speedboat - unaware that gangsters and saboteurs want to thwart them and won't stop at murder. Filled with gymnastic action-packed fights, Speed Madness is "a knockout for fans who cheer the hero and hiss the villain.
Richard Talmadge plays John Drake, a safe expert who gets work managing a safe company in South America. On the way to his new job, he gets into a fight with Dynamite Diaz (Dick Sutherland), a prize fighter who thinks that Drake has flirted with his wife (Peggy Shaw). Drake has found love on board, but it's with Dolores D'Arcy (Lorraine Eason), the daughter of a banker (Charles Hill Mailes). Once he lands in South America, however, he discovers the job was a fake and is robbed of his money and passport.
A ship captain's beautiful daughter and a wealthy playboy who is searching for buried treasure find themselves stranded on a desert island.
Richard Jones is the assistant to the district attorney. He decides to single-handedly expose a drug ring that is terrorizing Madison, a reformer. Madison's son, Bob, has become a hophead because of the ring, and Greer, Jones' rival for the hand of Madison's daughter, Constance, is the ring's leader. The district attorney himself is in league with Greer as well. Jones disguises himself as an Asian, leaps over tenement roofs, beats up a mob of Chinese gangsters, and performs several dozen other daredevil feats.
Lord Hugh Wainwright is a Britisher who, on his way to his California ranch, rescues pretty American Nancy Burton from a brutal peddler. Interested in Nancy, Lord Hugh obtains passage as valet to her nouveau riche uncle, Phineas Ward.
A young girl, who is about to receive a large inheritance, is abducted to an isolated sanitarium where a crazed doctor is performing strange experiments.
The no-good son of a company owner is sent to investigate a problematic business deal.
A young man is sent by his father to Mexico to investigate his mine. On the way he meets a girl, whose life he has already once saved, who is traveling to the same place. He is kidnapped by some men who are misdirecting the mine shipments, and escapes in time to save the girl from death
