Captain Planet and the Planeteers

The Big Clam-up (2x9)

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People are collapsing in San Francisco with symptoms that suggest a whole range of pollution poisoning. As the Planeteers follow clues to solve this mystery, Ma-Ti (who is reading 1940s detective novels) keeps imagining himself as a private eye in black-and-white sequences. Ma-Ti proves a poor sleuth at first, but eventually he tracks down Verminous Skumm who is serving seafood tainted by storm drain runoff in his restaurant, The Sinking Ship.