When Pretty Little Liars returns for its seventh, and possibly final, season on June 21, expect plenty of homecomings. And at least one major death. And a lot of secrets. And lies. You know, the usual.

In case you need a refresher -- there's a lot of drAma to keep up with! -- Season 6 ended with the revelation that Mrs. DiLaurentis's twin (and Charlotte’s real mother), Mary Drake, had been the one sending the girls death threats, with help from Alison’s husband, Elliott Rollins. Ali checked herself into a mental hospital after thinking she'd been seeing ghosts, thereby giving her shady husband total control over the Carissimi Group, and Hanna got pulled through a hole in the floor (casual) and kidnapped by Uber A, who goes by the initials A.D.

Now, it's up to the remaining Liars to save Hanna (oh, wait, I meant #SaveHanna) before it's too late. In other words, there's going to be a whole lot of murder and mayhem this season. Even the Liars get their hands a little dirty. So, to emotionally prepare you for the drama ahead, here's what you need to know about what could be the final season of PLL:

Uber A has given the Liars a deadline.

The seventh season premiere is titled "Tick-Tock, Bitches," so obviously, the Liars are up against the clock. Unfortunately for them, they have only 24 hours to save their friend. According to the episode's official synopsis, in order to #SaveHanna they make a deal with Uber A that could have deadly consequences.

"After Hanna's shocking abduction by ‘Uber A,' the PLLs and company desperately race against the clock to save one of their own. The only way to do this is by handing over evidence of Charlotte's real murderer to ‘Uber A.' In order to do so, the girls must decide what blatant lines they are willing to cross that they have never breached before; and once they cross that line, there is no turning back."

Hanna is in serious trouble.

As if being kidnapped by A.D. wasn't enough, Ashley Benson was left off the official Season 7 poster, which has some fans worried about her future on the show. That being said, Benson is still a series regular, so I have to believe that the Liars figure out a way to save her before her time runs out. There’s no way Uber A is going to kill Hanna. Not only did we see Hanna in the flash-forward at the end of Season 6A -- that scene hasn’t even happened yet -- but we also think A is a lot smarter than Hanna and Caleb thought he/she was. That, and I know first-class trolling when I see it.

Expect to see plenty of familiar faces.

Executive producer Marlene King has dubbed Season 7 "the season of homecomings." In an interview with EW, she said, "There’s a lot of great people coming back ... there are a lot of old faces that are going to feel like new faces when we see them again this year."

Some of those faces include Jenna (Tammin Sursok), Noel Kahn (Brant Daugherty), Jason DiLaurentis (Drew Van Acker), and the dubious doctor himself, Wren Kingston (Julian Morris). Though unconfirmed by Freeform, Morris took to Twitter to share that he would be back in Rosewood before Pretty Little Liars wraps its seventh season.

In addition to familiar faces, Season 7 will also introduce a few new characters. Nicholas Gonzalez will join the recurring cast as Marco Furey, "a sexy, witty, straight-talker detective" in charge of overseeing Rosewood PD's open homicides. For a town as seemingly quaint as Rosewood, there sure is a lot of murder to oversee. Hopefully, Marco puts an end to Rosewood's most popular trend: attractive older detectives seducing young girls.

One of the Liars will walk down the aisle.

Though the bride and groom -- or brides -- have yet to be revealed, King confirmed on Twitter that at least one Rosewood couple will get hitched in Season 7. Following King's comments, Lucy Hale made some cryptic comments of her own at the 2016 Billboard Awards, saying, "I can say that something very special and romantic happens for my character."

While that's pretty convincing evidence that points toward an Ezria wedding, let's not forget that despite kissing Caleb and confessing her true feelings for him in the Season 6 finale, Hanna is still engaged to Jordan. If Hanna survives this whole ordeal with with A.D., she might be in a rush to walk down that aisle. YOLO, right?