After stopping a fur thief from taking his goods, a trapper finds that his furs have been swiped anyway. The ever-popular pooch Rin Tin Tin, Jr. goes into action, sniffing out the culprit and finding the booty. Monte Blue and Grant Withers co-star in "The Test." Next, the thrilling oater "Vengeance of Rannah" stars Bob Custer as a cowpoke who comes through when thieves and cattle rustlers start trouble. With Victoria Vinton and Rin Tin Tin, Jr. 114 min. total. Standard; Soundtrack: English.