In the wake of Nolan’s murder, Ava, Caitlin and Dylan join forces to give themselves a credible alibi on the night in question. Alison goes toe to toe with Dana Booker, BHU’s new head of security, who is suspicious of Nolan’s “perfect” posse. And Mona starts slipping into old habits while wrestling with a guilty conscience.
The Perfectionists kick their investigating into high gear when they identify a possible suspect in Nolan’s murder. Alison begins to look into the circumstances surrounding the mysterious suicide of Taylor Hotchkiss. And seeing the Perfectionists juggle sleuthing with their intense academic demands, Alison decides to use her past in Rosewood as a way to mentor them through their current situation.
During BHU’s Dead Week, Caitlin tries to get her academic life in order, as well as elevate her relationship with Jeremy. Ava reluctantly teams up with Zach on a school assignment and Dylan’s nerve damage impacts an important music project. Ali continues to make inroads with Taylor, while Mona investigates who left her a mysterious message.