Riders of the Timberline was the 38th entry in the "Hopalong Cassidy" western series. To keep things from getting stale, star William Boyd and producer Harry Sherman began plunking Hoppy into non-western environs in the early 1940s (including, at one point, the Arabian desert!) Timberline takes place in the Great North Woods, where Cassidy and his cohorts Brad King and Andy Clyde help a campful of lumberjacks. There was plenty of opportunity for the usual riding and gunplay, but this time around the bad guys were dressed in furs and hipboots rather than buckskin. The direction of Riders of the Timberline was in the expert hands of western maestro Lesley Selander.