After their recent encounter with “Aâ€, Aria, Emily, Hanna and Spencer think they may be closer than ever to figuring out whom “A†really is. But when the girls decide to enlist Caleb’s hacking skills to help with their quest, Hanna no longer wants a part of the plan. The last thing Hanna wants is to get Caleb involved in something else shady and also to open the door to questions that Ha