Jamal explains what they know about Ghostwriter to Alex after Ghostwriter writes a message to Alex. Jamal then deduces that THABTO is connected to a series of backpacks being stolen.

Alex and Jamal deduce that the THABTO note is written in a secret code and work to decipher it.

Gabby and Tina discuss setting the scene for the video by choosing descirptive words and facts from the case.

Ghostwriter writes a name and a phone number connected to THABTO to Alex and Jamal, who deduces that he must be one of the backpack thieves.

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.