Johnny Test
Young Johnny is gung-ho and full of courage. Johnny's brainiac twin sisters, Susan and Mary, use Johnny as their guinea pig for their outrageous scientific experiments. If they can dream it up, Johnny will do it; as long as his genetically engineered super dog, Dukey, can come along.
Season 3 · Episode 24 ·
Johnny Dukey Doo
When a condemned hotel gets haunted by ghosts Susan and Mary drag Johnny, Dukey and Gil into the house to prove that the ghosts are fake.
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Episode 24 of season 3 of Johnny Test: “Johnny Dukey Doo”. Aired 2008-01-27. Watch it online free on ZapFlix.