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Pretty Little Liars Season 1 Episodes

22 Episodes 2010 - 2011

Based on the novels by Sara Shepard, the first season of this mystery begins a year after the disappearance of Rosewood, Pa., high-school student Alison DiLaurentis (Sasha Pieterse). Her four estranged friends start receiving mysterious messages from someone who seems to know all of their secrets. These cryptic messages from an anonymous "A" lead Emily (Shay Mitchell), Hanna (Ashley Benson), Aria (Lucy Hale) and Spencer (Troian Bellisario) to reunite and start investigating who might know their darkest secrets, as well as what exactly happened to Alison.

Episode 1

Pilot

Tue, Jun 8, 2010 60 mins

The series premiere of a drama about four estranged friends reuniting because of mysterious messages that suggest their missing friend is watching them. First up: Each girl receives a message about a personal secret she wants no one else to know. Among those secrets: a father's affair; some shoplifting charges; an attraction to a sister's fiancé; and an attraction to a female neighbor.

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Pretty Little Liars, Season 1 Episode 1 image

Episode 2

The Jenna Thing

Tue, Jun 15, 2010 60 mins

Jenna Cavanaugh comes back to town, and her presence as well as questions about Ali's death force the girls to deal with the ugly past. Meanwhile, Aria tries to keep her distance from Ezra; and Spencer puts herself in Wren's orbit.

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Pretty Little Liars, Season 1 Episode 2 image

Episode 3

To Kill a Mocking Girl

Tue, Jun 22, 2010 60 mins

Det. Wilden looks for answers as he uses his connection to Hanna and Ashley to his advantage. Meanwhile, the girls honor Alison; Aria runs into her dad's ex-mistress; Spencer deals with Melissa's vengeance; and Emily sees a new side of Toby.

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Pretty Little Liars, Season 1 Episode 3 image

Episode 4

Can You Hear Me Now?

Tue, Jun 29, 2010 60 mins

The girls try to put an end to "A" by blocking unknown users in their e-mails and texts. Meanwhile, various surprises await them, including a gift from a potential love interest, unsolicited advice and unwarranted academic recognition.

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Pretty Little Liars, Season 1 Episode 4 image

Episode 5

Reality Bites Me

Tue, Jul 6, 2010 60 mins

The girls deal with the repercussions of ignoring "A" and remain troubled by her lipstick message. Meanwhile, a new boy arrives on the scene; and various romances face challenges, thrive or remain in limbo.

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Pretty Little Liars, Season 1 Episode 5 image

Episode 6

There's No Place Like Homecoming

Tue, Jul 13, 2010 60 mins

Some ugly secrets cast a shadow on the school's homecoming dance, and one girl's surprising date choice may complicate things for her. The band 2AM Club performs at the dance.

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Pretty Little Liars, Season 1 Episode 6 image

Episode 7

The Homecoming Hangover

Tue, Jul 20, 2010 60 mins

The girls deal with the fallout from the homecoming dance as they mull over a secret about Toby. Meanwhile, Aria starts getting troubling text messages from someone besides "A." Sara Shepard, author of the books the series is based on, guest stars.

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Pretty Little Liars, Season 1 Episode 7 image

Episode 8

Please, Do Talk About Me When I'm Gone

Tue, Jul 27, 2010 60 mins

Alison's brother returns to town and thwarts the girls' plans for her memorial service. Meanwhile, Det. Wilden reappears on the scene; and Hanna's home life threatens her social status at school.

Where to Watch
Pretty Little Liars, Season 1 Episode 8 image

Episode 9

The Perfect Storm

Tue, Aug 3, 2010 60 mins

The girls are stuck at school when a storm hits town on SAT day, and though the testing is postponed, the girls are still stressed about lingering personal problems. Elsewhere, Byron seeks parenting tips from Ashley as his marriage continues to crumble.

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Pretty Little Liars, Season 1 Episode 9 image

Episode 10

Keep Your Friends Close

Tue, Aug 10, 2010 60 mins

The girls go on an upscale camping trip for a classmate's birthday party, and a text suggests that "A" may be in attendance as well. Meanwhile, the FBI comes to town after new evidence about Alison's case surfaces; and financial strains weigh on Ashley.

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Pretty Little Liars, Season 1 Episode 10 image

Episode 11

Moments Later

Mon, Jan 3, 2011 62 mins

Hanna is taken to the hospital in the wake of the hit-and-run, and her friends lean on each other and retrace everything that's happened to them since "A" entered their lives.

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Pretty Little Liars, Season 1 Episode 11 image

Episode 12

Salt Meets Wound

Mon, Jan 10, 2011 60 mins

Hanna mends in a wheelchair upon her release from the hospital. Meanwhile, Aria and Fitz think someone knows about their relationship; Spencer's romance with Alex hits a snag; and Emily invites Maya to dine with her family.

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Pretty Little Liars, Season 1 Episode 12 image

Episode 13

Know Your Frenemies

Mon, Jan 17, 2011 60 mins

"A" tempts Hanna to return to her old criminal ways. Meanwhile, Noel continues to go after Ezra; Emily's mother stops pretending to accept Maya; Spencer adjusts to her sister's marriage; and the girls get some surprising assistance.

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Episode 14

Careful What U Wish 4

Mon, Jan 24, 2011 60 mins

A wish comes true for one of the girls, but surprising consequences follow.

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Pretty Little Liars, Season 1 Episode 14 image

Episode 15

If at First You Don't Succeed, Lie, Lie Again

Mon, Jan 31, 2011 60 mins

Emily returns to the swim team and faces competition from a jealous teammate. Elsewhere, Aria and Ezra attempt to go on a date in public; and Spencer confronts an ugly part of her past when she asks Jason for some details about the night Ali died.

Where to Watch
Pretty Little Liars, Season 1 Episode 15 image

Episode 16

Je Suis un Ami

Mon, Feb 7, 2011 60 mins

Emily wants to swim the coveted anchor leg in a meet, but she has to battle Paige for it. Meanwhile, Hanna must repay Caleb for a favor; and Spencer has ulterior motives when taking on a tutoring job.

Where to Watch
Pretty Little Liars, Season 1 Episode 16 image

Episode 17

The New Normal

Mon, Feb 14, 2011 60 mins

Aria's father has a parent-teacher conference with Ezra. Elsewhere, one girl lets down her guard with an untrustworthy person; and a wrongly accused individual finds a friend.

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Pretty Little Liars, Season 1 Episode 17 image

Episode 18

The Bad Seed

Mon, Feb 21, 2011 60 mins

Stress takes its toll on the girls as they scrutinize suspects in Alison's murder, including a classmate with a grudge, a secretive brother-in-law and the ever-mysterious "A." Meanwhile, Aria uses the school play as a way to bond with Ezra.

Where to Watch
Pretty Little Liars, Season 1 Episode 18 image

Episode 19

A Person of Interest

Mon, Feb 28, 2011 60 mins

The police think the girls are fabricating stories when they make claims about Ian. Meanwhile, some clandestine relationships flourish, and others flounder.

Where to Watch
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Episode 20

Someone to Watch Over Me

Mon, Mar 7, 2011 60 mins

Spencer looks increasingly guilty. Meanwhile, the girls realize that other people in town are keeping secrets.

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Pretty Little Liars, Season 1 Episode 20 image

Episode 21

Monsters in the End

Mon, Mar 14, 2011 60 mins

Off. Reynolds keeps a close watch on the girls as Rosewood celebrates Founders' Day. Meanwhile, the girls hide their feelings and the status of certain relationships, such as Hanna's love for the boy who broke her heart and Spencer's friendship with Toby.

Where to Watch
Pretty Little Liars, Season 1 Episode 21 image

Episode 22

For Whom the Bell Tolls

Mon, Mar 21, 2011 60 mins

In the first-season finale, the girls recruit an unexpected ally to assist them in stopping "A."

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Pretty Little Liars, Season 1 Episode 22 image