Trapped (1937)

Ted Haley rides to his brother's ranch and finds him dying from a knife wound. The brother names Sol Rothert as his killer. Leaving the house, Ted doesn't notice a mysterious man watching him, but he sees a rider gallop up to the house and enter, and Ted rushes to investigate. The rider, later identified as Adele Rothert,the young, eastern-raised niece of Sol Rothert, stages a gun battle with Ted and gets away. Ted rides to the nearest town, where he gets into a clash with Moose Nelson and Ike Britt before the sheriff intervenes. The sheriff tells Ted that Rothert could not have killed his brother, as Rothert has been a cripple for years, unable to move from his wheelchair. It isn't long before everybody but Ted, Adele and the Sheriff knows that Rothert is indeed the killer, leader of the gang and not a cripple.