The Adventures of Paddington Bear

Paddington and the Pyramid Selling (1x14)

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The streets of Cairo are the setting for a con that leads Paddington to "purchase" a pyramid. When he realizes how big this thing really is, and that it would be impossible for the postman to deliver it to Mr. Gruber's shop, he sets out to get his money back. And with Mr. Gruber's help, he makes a pretty good deal.