M-G-M's Lassie #19

In "The Black Jaguar," a fearsome predator stalks the wilds of the Matto Grosso, driving Rocky to lead a hunt while urging Timbu to stay behind with Gerry and Lassie. Feeling overlooked, Timbu secretly forges a spear and slips away, with Lassie quietly following to keep watch. When the jaguar strikes, chaos erupts—Rocky’s gun fails, and in that critical moment, Timbu must step forward, armed only with his makeshift weapon, as Lassie draws the beast’s attention.

In "The Lost City," Lassie uncovers an ancient artifact in Cuzco, sparking an expedition with Rocky and Gerry as they follow Senhor Vega into the high Andes. When their trail leads to a hidden Incan pit and the trio becomes trapped, Lassie and Timbu must venture into the mountains to find them—where Lassie’s keen instincts will lead them to a long-forgotten city and a secret door that holds the key to their rescue.

In "The Jungle Courier," Lassie teams up with Timbu to stop a stolen mail canoe from reaching Don Sodero, a ruthless man who’s driven settlers from their land. With the canoe carrying crucial proof of their rightful claim, the duo races downriver through the wild jungle, determined to deliver it before it’s too late.