Riders of the Plains. Word Search Puzzle Solver. Riders of the Plains word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. B-Western regulars Jack Perrin and Marilyn Mills starred in this obscure low-budget Western serial released in 15 chapters. This includes identifying and searching for words that are related to : Boris Karloff, Robert Miles, Ruth Royce, Rhody Hathaway, Charles Brinley, Running Elk, Clark Comstock, Jack Perrin, Western, Kingsley Benedict, Marilyn Mills .