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 5 · Episode 25 ·
Johnny Trick or Treat
Johnny spends the night in a haunted house with Dukey and Jillian to win a ton of candy.
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Episode 25 of season 5 of Johnny Test: “Johnny Trick or Treat”. Aired 2011-10-17. Watch it online free on ZapFlix.