Ep 3. ...If One of Them is Dead

The episode begins with Alison leading a discussion in her class about the concept of "perfection" and how it can be detrimental to one's mental health. Meanwhile, Ava is struggling to deal with the fallout from her sexting scandal and the knowledge that her parents have cut off her trust fund. She confides in Dylan, who offers to help her try to get back in her parents' good graces.

Mona, still suspicious of Mason, continues to investigate him and discovers that he has a criminal record. She shares her findings with Alison, who is hesitant to jump to conclusions but agrees to look into it further. At the same time, Caitlin receives a threatening note in her locker, which she shares with her friends. They believe it may be connected to the mysterious "Professor" who sent them the invitation to Beacon Heights in the first place.

As tensions rise and secrets are revealed, the students band together to try and solve the mystery of who is behind the note and what it could mean for their safety. However, as they delve deeper into the investigation, it becomes clear that one of them may not make it out alive. The episode ends on a cliffhanger, leaving viewers wondering who will be the next victim of the mysterious forces at work in Beacon Heights.

Overall, "If One of Them is Dead" is a tense and suspenseful episode that keeps viewers on the edge of their seats. With its intricate plot, complex characters, and shocking twists, it is sure to leave audiences craving more.