"Trick or Treat" is the fourteenth and final episode of the second season of Cyberchase. It originally aired on October 31, 2003.
Hacker shows up at Motherboard Control Central. He pleads guilty to being the King of Chaos, but says he’s sorry. He doesn’t want to be the bad guy anymore. But when nobody’s looking, he slips a strange frog into the air duct. What happens when this frog grows into a grotesque, alien creature that threatens to destroy Motherboard? And what will happen to the kids when they go inside Motherboard to track it down?
- This is the first appearance of Wendy, Bianca's white friend. This is also the Season 2 episode to feature Wendy with Bianca.
- This is the first Halloween episode of Cyberchase.
- Main article: A Time to Cook (transcript)