Ken Maynard hears the cry of the weird masked “phantom” of Tombstone Canyon. The plot thickens when Maynard discovers a man with a key to his past has been murdered by the phantom. Credit: Public Domain Movies – Feature Films: Cinema collection: epochcinema.com Epoch Original content: epochoriginal.com Feature Films: www.theepochtimes.com/featured-films * Click the “Save” button…