The Sky Ranger (aka The Man Who Stole the Moon) is a 1921 American 15-episode/chapter silent film serial. Directed by George B. Seitz who also starred with June Caprice, the film serial was an adventure film with locales as exotic as Tibet. The plot staple of an inventor of aviation technology having to contend with conspirators who wish to steal the invention, often appeared in aviation films. The Sky Ranger is considered to be lost. Plot George Rockwell (George B. Seitz) is young and adventurous. He meets June (June Caprice), a beautiful young girl on the road and decides she will be his wife. But Professor Elliott (Frank Redman), June's father, has him thrown out the door. George does not give up and saves the Professor from his cousin Murdock (Joe Cuny), who was trying to kill him. Professor Elliott has made a number of important inventions, including developing a fast, silent aircraft. His latest work concerns a new, powerful light, which is the object of those criminals who want to steal the invention. On the day of their engagement, George and June are abducted on an aircraft which takes them to Tibet. Dr. Santro (Harry Semels), Murdock's accomplice is the culprit. He and his wife Tharen (Peggy Shanor) leave the two in the hands of angry Tibetans. The two lovers are locked into a box with only a tiny hole in it through which they can see some food that is out of their reach. As if that was not enough suffering, one of the abductors decides to shoot them through the box. George miraculously opens the box with a rock he had picked up before. As he tries to capture two horses, June is taken away in the desert by a Tibetan. George follows the traces left by his horse and rescues June in time. Chapter titles Out of the Clouds The Sinister Signal In Hostile Hands Desert Law Mid-Air The Crystal Prism Danger's Doorway Dropped from the Clouds The House on the Roof Trapped The Seething Pool The Whirling Menace At the Last Minute Liquid Fire The Last Raid Cast George B. Seitz as George Oliver Rockwell June Caprice as June Elliott Harry Semels as Dr. Santro Frank Redman as Professor Elliott Joe Cuny as Murdock Peggy Shanor as Tharen Charles "Patch" Revada as Bean Spencer Gordon Bennet Tom Goodwin as The Butler (credited as Thomas Goodwin)