My Brother Talks to Horses (1947)

Living with his family in Baltimore, 9-year-old Lewie Penrose claims that he can converse with horses–and also pick the winners of upcoming races. When it appears as though Lewie is telling the truth, he attracts the interest of gambler Rich Roeder who needs a “sure thing” in the upcoming Preakness. Meanwhile, Lewie’s older brother John carries on a romance with the lovely Martha.