The team investigate's the school's computer room after learning the smear flyers are printed out from there. There, they run into another student who they suspect may be the culprit.
The Ghostwriter team creates a casebook to figure out who is behind the smear flyers against Alex.
After Alex follows a suspect to a video game arcade, the team deduces a group of four Double Defender players are THABTO and the backpack thieves.
Gabby and Tina find the taxi driver that drove a suspect to Mr. Brinkers. They determine that the man in a suit couldn't have done it after learning he caught a flight the same time that the fire started.
After researching FBI, Alex suspects the man in a suit that visited Mr. Brinkers was a member of the FBI.