Plot summary
Emily accepts an offer to attend the homecoming dance with Toby, despite Hanna presuming she wanted to go with Maya. Spencer gets ready for homecoming with Alex as her date, but will things go as she planned them to? Hanna meets Lucas when she joins the "Real Love Waits" celibacy club with Sean. Aria is still reeling over her breakup with Ezra and the tension between her parents. Spencer asks Hanna to collect Jenna's psychotherapy file, while she does her community service. At homecoming, Toby takes Emily to an isolated lab and later the other three find it empty with blood on the ground. 2AM Club guest stars in this episode. ' A' ending: 'A' sprays over the town sign and changes the population census to one less number.
Credits
Adapted from Wikipedia contributors, Pretty Little Liars season 1. HTML formatting and reference markers removed.