Mile a Minute Love (1937)

Bob, a young inventor who has designed a new motorboat engine, is in love with Wynne Drexel, the daughter of his boss, a speedboat racing enthusiast who dreams of winning a big race. A man who passes himself off as a Spanish count named Ribalto, and claims to be a motor boat manufacturer, dupes Drexel out of $100,000, then forges a $200 check and blames the forgery on Bob. In the big race, Ribalto's henchman, Strauss, tampers with Bob's boat, making it crash. In the end, Bob proves Ribalto's crimes, wins the race and earns the gratitude of Drexel, who now approves of Bob's marriage to Wynne.