3. Bölüm: John ve Colin, Lassie'yi buldukları nehir kıyısını araştırırken bir teknedeki etiketli bir köpek tasmasını keşfederler.

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John and Colin search for clues at the place where they picked up the puppy to take Lassie to see her mother. There was a boat on the river near where they picked up the pups, and in the boat was a puppy collar labeled Lassie. (Source: Amazon Prime Video)