Pretty Little Liars - Season 1 (2010)

The liars take matters into their own hands and try to put a stop to "A" by blocking all unknown users, but their problems are far from over.

Trying to ignore "A" backfired for the liars and now they must pay the penalty as they deal with typical teenage drama - the boy kind.

The homecoming dance is supposed to be a time for fun and making memories, but for the liars, disturbing secrets threaten to ruin their perfect night.

After the homecoming dance, the liars try to sort out the devastation; "A" isn't the only one sending Aria texts as tensions rise in the Montgomery household..

Last-minute preparations for Alison's memorial get derailed when her brother, Jason DiLaurentis arrives back in Rosewood, and saying goodbye is at the bottom of his list.

The liars are trapped at school as a bad storm brews, and tensions run high; Byron leans on Ashley for advice on parenting as his relationship with Ella takes a bad turn.

The liars go glamping for Mona's birthday as A's threats escalate and the FBI arrives in Rosewood. But not even a mani-pedi can lift the girls' spirits when the evening takes a dangerous turn.

Moments after Hanna is hit by a car, the liars' world is turned upside down, as "A" is no longer content playing a game of cat and mouse.

As the liars try their best to support Hanna's release from the hospital, they each have their own surprises to deal with.

As Noel steps up his pursuit of Ezra, him and Aria start to feel like there may be no way out; Pam's perceived tolerance of Maya comes to a screeching halt; Spencer must handle the return of happy newlyweds Melissa and Ian; "A" has Hanna jumping through old habit hoops with regard to the stolen money.

The school's dance-a-thon gives the liars more than sore feet; Aria's old babysitter, Simone, comes to visit and sets her sights on Ezra.

Emily deals with a jealous teammate; Aria and Ezra their first public date; Spencer turns to Jason for information.

Emily and Paige are pitted against each other in the big race; Caleb calls in his favor with a guilty Hanna; Spencer takes on the task of tutoring a fellow student to get answers.

It's parent-teacher conferences and one little liar's father sits face to face with the love of her life. Better believe that "A" has something to say about it.

As tensions rise, the girls ponder the true nature of evil; Aria views the school play as an opportunity to get closer to Ezra, but will her plan backfire?

After a shocking revelation from the police, it looks like the liars could be crying wolf. With everything pointing to Ian, could the girls be wrong?

As the heat is turned up on suspicions surrounding Spencer, the liars must come to the harsh realization that they aren't the only ones hiding secrets in Rosewood.

Everyone has something to hide, but having to live with those secrets can become a big burden for the liars; Spencer and Toby aren't able to be seen together; Rosewood police officer Garrett keeps his promise to keep a close eye on the girls - much closer than they realize.

In the season one finale, the girls go to an unlikely source for help to put an end to "A" and the mystery surrounding their friend. Can they really stop "A" once and for all?