Video Game Agents: Book 4: A Link to the Lost

Things are heated with the Video Game Agents and that's putting it lightly. Not only have Max and Zoe, new recruits to the VGA, gotten themselves kicked off the crew, they discovered their missing mother isn't so missing after all—and she's enemy number one of the agency. What. Is. Going. On?! Their ship/sister (yeah, it's weird) has a lead on where their mom might be. But are they experienced enough to get to her? Do they even want to? I mean, what kid doesn't. But what if she really is the bad guy? Could they fight against their own flesh and blood?