Right after The Lady Killer, The camera is seen in the Halloween store. Looking at all the masks. The phone rings and we hear Shana's voice telling the caller she'll get back to them. Then "A"'s voice is heard calling for a costume order but before A says who they are the call ends.

Jason meets CeCe

Someone gets a very mysterious voicemail

You'll learn more about Rosewood's newest resident and watch a very tense face-off!

Lucas has a mysterious run-in with a very familiar face -- and he has something in common with the new girl in town.

A mystery lurks around a new girl and her phone

The lights go out in the Halloween store

"A" looks at a train map...

Unexpected Halloween party guests pop up at every turn and The Rosewood Halloween Ghost Train becomes one killer party.

Shana tells Emily that she has a message from Ali, but can Emily and the girls trust Shana? Shana ups the stakes and says that Ali wants to meet Emily, but only Emily.

Ali considers a plea deal, but it incriminates someone else, so the girls try to help her and Mike, as well as themselves. Elsewhere, Spencer unwinds while on a night out in London

A glimpse at what everyone’s favorite characters have been up to inside and outside of Rosewood over the past five years. The episode will feature never-before-seen scenes, backstage tours of brand new PLL sets, interviews with the cast and crew surrounding the highly anticipated time jump, including the style evolution of the Liars, and more.

After the stalker nearly killed Emily, the Liars begin to take the threats more seriously and attempt to keep their mouths shut to prevent any further harm. Caleb must deal with the collateral damage of taking the blame for the leak about Yvonne; Spencer tries to comfort him and get him to tell the truth. Emily goes on a mission to track down who came after her. Aria and Ezra move forward with the novel.

Meanwhile, Hanna avoids dealing with her personal life.