Seasons & episodes

Elizabeth takes Bianca captive in the hope Toby will give her the genius key, or she will use the shrink ray on Bianca.

Elizabeth reveals a T-rex to a press conference at the school, but the T-rex rampages through the school. Toby creates a giant doll to fight the T-rex, and the doll wins. Toby zaps himself and Elizabth with the MFE, removing their genius. However, Elizabeth still has the genius key in the pocket.