1. Pilot
Aired: Jun 8, 2010One year after the mysterious disappearance of Alison Dilaurentis, her friend...
2. The Jenna Thing
Aired: Jun 15, 2010Flashbacks from Aria, Spencer, Hanna and Emily's past occur when blind girl, ...
3. To Kill a Mocking Girl
Aired: Jun 22, 2010Aria has an unsettling encounter with Meredith; Emily is forced to see Toby i...
4. Can You Hear Me Now?
Aired: Jun 29, 2010The liars take matters into their own hands and try to put a stop to "A" by b...
5. Reality Bites Me
Aired: Jul 6, 2010Trying to ignore "A" backfired for the liars and now they must pay the penalt...
6. There's No Place Like Homecoming
Aired: Jul 13, 2010The homecoming dance is supposed to be a time for fun and making memories, bu...
7. The Homecoming Hangover
Aired: Jul 20, 2010After the homecoming dance, the liars try to sort out the devastation; "A" is...
8. Please, Do Talk About Me When I'm Gone
Aired: Jul 27, 2010Last-minute preparations for Alison's memorial get derailed when her brother,...
9. The Perfect Storm
Aired: Aug 3, 2010The liars are trapped at school as a bad storm brews, and tensions run high; ...
10. Keep Your Friends Close
Aired: Aug 10, 2010The liars go glamping for Mona's birthday as A's threats escalate and the FBI...
11. Moments Later
Aired: Jan 3, 2011Moments after Hanna is hit by a car, the liars' world is turned upside down, ...
12. Salt Meets Wound
Aired: Jan 10, 2011As the liars try their best to support Hanna's release from the hospital, the...
13. Know Your Frenemies
Aired: Jan 17, 2011As Noel steps up his pursuit of Ezra, him and Aria start to feel like there m...
14. Careful What U Wish 4
Aired: Jan 24, 2011The school's dance-a-thon gives the liars more than sore feet; Aria's old bab...
15. If at First You Don't Succeed, Lie, Lie Again
Aired: Jan 31, 2011Emily deals with a jealous teammate; Aria and Ezra their first public date; S...
16. Je Suis Une Amie
Aired: Feb 7, 2011Emily and Paige are pitted against each other in the big race; Caleb calls in...
17. The New Normal
Aired: Feb 14, 2011It's parent-teacher conferences and one little liar's father sits face to fac...
18. The Badass Seed
Aired: Feb 21, 2011As tensions rise, the girls ponder the true nature of evil; Aria views the sc...
19. A Person of Interest
Aired: Feb 28, 2011After a shocking revelation from the police, it looks like the liars could be...
20. Someone to Watch Over Me
Aired: Mar 7, 2011As the heat is turned up on suspicions surrounding Spencer, the liars must co...
21. Monsters in the End
Aired: Mar 14, 2011Everyone has something to hide, but having to live with those secrets can bec...
22. For Whom the Bell Tolls
Aired: Mar 21, 2011In the season one finale, the girls go to an unlikely source for help to put ...