Jag is smart, and a hacker in his own right. That has nothing on his childhood friend Vivi, who suddenly shows up needing his help. She has some very powerful people after her because of what she knows, and she hoped that Jag could help her.
Their dynamic as childhood friends who never actually met in person until the beginning of this novel was such a nice change on the trope. I really enjoyed their dynamic, and how the club ended up playing into the situation with Vivi.
One of my favorites in the whole series.