Twinsanity

Twinsanity is the 18th episode in the series.

Plot synopsis
A spell gone wrong causes Tessa to swap places with her twin brother Bradley, who was attending a different summer camp. Christian is initially overjoyed to have another boy to talk to, but soon starts to miss his friend Tessa- will he be able to reverse the spell and bring her back? Meanwhile, Tessa is busy trying to survive Knights of Fantasy Combat Camp. Sonia makes friend with a racooon.

Appearances

 * Tessa
 * Bradley
 * Christian
 * Nepeta
 * Kate

Notes & trivia

 * This marked the first appearance of Tessa's twin brother, Bradley.  Despite that, this episode is actually better known for developing the relationship between Tessa and Christian
 * The Knights of Fantasy Combat Camp is heavily based off of the real-life Pennsic War, n Society for Creative Anachronism event that happens ever summer in Pennsylvania.