A serial killer is on the loose with a craving, making Calleigh its next victim, which also jeopardizes her ability to do her job.

“Pass/Fail” is the fifteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-fourth episode overall. The episode aired on January 18, 2010.

“Close to You” is the fourteenth episode of the fourth season of the NBC science fiction drama series Heroes, and the seventy-third episode overall. The episode aired on January 11,…

As Claire becomes immersed into the world of the Carnival, she becomes increasingly suspicious of Samuel’s motives. Hiro is on a mission to rescue one of his own, but has…

H.R.G. hosts an untraditional Thanksgiving dinner. Elsewhere, the Petrelli family gets a surprise guest at their table. Meanwhile, Samuel continues to hold Hiro hostage, as Lydia goes in search for…

H.R.G. hosts an untraditional Thanksgiving dinner. Elsewhere, the Petrelli family gets a surprise guest at their table. Meanwhile, Samuel continues to hold Hiro hostage, as Lydia goes in search for…

Rosewood’s Junior League Masquerade Gala is the perfect setting for “A’s” next game of cat and mouse with his/her favorite targets. But with Aria, Emily, Hanna and Spencer fast on…

Aria, Emily, Hanna and Spencer search for the meaning of new clues leads them to a doll hospital that holds some very familiar looking dolls and a little boy that…

Rosewood High’s “Truth-Up Day,” is not just an opportunity for the students of the school to air their grievances and stop bullying, but also a chance for Aria, Emily, Hanna…

After putting her foot down about Caleb with her friends, Hanna begins to feel that she is getting the cold shoulder from Aria, Emily and Spencer.

It’s the Halloween before Alison disappeared and where all of the secrets and lies began for Aria, Emily, Hanna and Spencer.

Aria, Emily, Hanna and Spencer have made a crucial mistake – they told someone about “A” and now they must pay the price. With the clock ticking and “A” calling…

Aria, Emily, Hanna and Spencer finally decide it is time to tell someone about “A”. Meanwhile, Hanna’s infamous grandmother drops into town for Tom’s rehearsal dinner.

It’s Emily’s moving day, while Hanna worries about Caleb’s wheelings and dealings. Aria is concerned about a party that both Ezra and Jason are invited to and Toby reacts to…

The night before the annual Rosewood Charity Fashion Show, Allison’s mother reappears in town and requests that the remaining girls model in the show in honor of her deceased daughter.

Hanna helps Lucas score a date, while Emily deals with the aftermath of her mother spilling to everyone that she has a scholarship offer.

Aria signs up for a college pottery class to get closer to Ezra, Emily lies to her mother about her swimming scholarship status, and Spencer spies on Alison’s older brother,…

Emily is contacted by a college swim team recruiter. While the Liars struggle with being separated, Hanna doesn’t know who to reach out to when her father shows up in…

Now that Aria, Emily, Hanna and Spencer are in possession of the information that Alison left them, the girls decide that it’s time to finally put an end to “A”…

Everyone has something to hide – whether it be a secret romance, who they really are and what their true intentions are. For Aria, Emily, Hanna and Spencer, keeping things…

As their doubts, fears and suspicions grow, Aria, Emily, Hanna and Spencer start to wonder what the true face of evil looks like. Is it the girl who holds a…

The girls try to resume a sense of normalcy in their lives, but even the simple tasks of dating and extra-circular activities meet with strife. Emily must deal with a…

Relationships are in flux in Rosewood, PA as the Liars face many obstacles. As Noel steps up his pursuit of Ezra and what he can gain from his knowledge, Aria…

Hanna is released from the hospital, but confined to a wheelchair. Meanwhile, Aria struggles with the fact that Noel knows about her affair with Ezra, Spencer’s relationship with Alex hits…

Moments after Hanna is hit by a car, the girls’ world is turned upside down. “A” is no longer content to playing a game of cat and mouse – it…

“A” targets the girls once again as they attend an upscale camping trip for one of their friend’s birthday party and they fear that “A” may want to crash the…

Rosewood gets a massive storm on the day the students are to take their SAT test, which causes the school to postpone the examinations. Trapped in the school during the…

After much planning, the day of Alison’s memorial is around the corner and the girls are ready to say their goodbyes. But when Alison’s brother Jason arrives, Spencer, Aria, Hanna…

The homecoming decorating committee is knee deep in balloons, and girls are jockeying for position to be the queen, while four friends from Rosewood just try to stay afloat. Dealing…

Tired of being harassed by “A,” the girls decide to put a stop to the anonymous emails and text messages by blocking all unknown users. But even with the mysterious…

The saying “The past will come back to haunt you” is never more true than for Aria, Spencer, Hanna and Emily. As the girls try to pay tribute to Alison’s…

The circumstances surrounding Alison’s disappearance continue to haunt Aria, Emily, Spencer and Hanna, as questions arise about the night she went missing. To complicate matters, Jenna’s return to Rosewood makes…

Artsy and eclectic Aria has just returned to town after spending a year overseas and, while she tries to deny feeling hurt over her father Byron’s indiscretion with one of…

After years of questions and mystery surrounding the night Alison DiLaurentis disappeared, her four best friends come face to face with Ali and finally learn what really happened to her…

It is a rough time for all of the Liars as Spencer is reeling about the memories from her lost summer, Aria is still nursing a broken heart, Emily is…

Emily, Hanna and Spencer are concerned for Aria as they watch their friend crumble after learning shocking news about Ezra. Not knowing what is true or what to trust, Aria…

Spencer’s numerous sleepless nights with the help of prescription pills start to take a toll on her as her hunt for Ali and much needed answers continues. As she pours…

With Spencer’s possible Board Shorts revelation, she is now more determined than ever to prove her theory before bringing it to the other girls’ attention – especially since it could…

Hanna’s new interest in crime novels helps her to come up with a plan to try and figure out whose body is in Ali’s grave. While Hanna is on her…

Shana returns to Ravenswood to tell Emily that she has a message from Ali, but can Emily and the girls trust Shana with all that they know about her? And…