Lassie #70

Masked thieves rob an armored truck of funds intended to restore a fire-ravaged area. The only clue leads Bob and Scott to three fishermen camping in the forest. Lassie discovers the stolen money buried in their camp but the thieves flee with the loot. As the crooks approach Pinewood Summit, an air tanker drops a load of fire retardant in their path. Bob, Scott, and Lassie nab the thieves.