"Forty Thieves" was the 54th and final Hopalong Cassidy series western produced by Harry "Pop" Sherman. It is nonetheless an above average entry in the long running series. It was directed by long time series director Lesley Selander. The production values remained high and the supporting cast was filled with a cast of veteran players.
Hoppy (William Boyd) is the sheriff who has driven out all of the bad elements from the town with the help of his trusty deputies California Carlson (Andy Clyde) and Jimmy Rogers (Jimmy Rogers). The film starts out with several hard ridin' chase sequences of Hoppy chasing down the baddies. One day an old nemesis Tad Hammond (Douglas Dumbrille) rides into town. It seems that Hoppy had been responsible for Hammond's recent imprisonment.
Hammond vows revenge. Since Hoppy is running for re-election as sheriff, Hammond plans to run his own candidate for the office with a little help from his friends. His candidate is the spineless gambler Jerry Doyle (Kirk Alyn). So Hammond calls in the forty thieves of the title to ensure that Doyle wins. The forty thieves include such "B" western veteran heavies as Glenn Strange, Hal Taliaferro, Bob Kortman and Jack Rockwell.
The heroine and love interest of Rogers is Katherine Reynolds (Louise Currie) the daughter of upstanding citizen Judge Reynolds (Robert Frazer).
Hammond fixes the election and Doyle is proclaimed sheriff. Hoppy then decides that it is time to clean up the town once more. He is aided by his former boss Buck Peters (Herbert Rawlinson) and the boys of the Bar 20. After a classic climatic gunfight justice prevails and California provides the standard "leave 'em laughing" ending.
This would be the last Cassidy feature for two years. Boyd would take over production of the series in 1946 and crank out a further 12 installments before moving on to TV in the early 50s.
Kirk Alyn (Doyle) is best remembered for playing Superman in two Columbia serials (1948 & 1950).
"Pop" Sherman could hold his head up high as he signed off from the series for the last time.