Welcome back, Jason!

When was the last time that “Pretty Little Liars” fans got to see Jason DiLaurentis (Drew Van Acker)? Alison’s (Sasha Pieterse) mysterious brother has been missing in action all season, but he’ll return to Rosewood in episode 7, titled “Original G’A’ngsters.”

According to the synopsis for the upcoming episode of the Freeform series, Jason returns in order to “stop Ali from getting too close to Mary (Andrea Parker).” Although Alison was initially suspicious of her aunt, stories about her past are starting to change Alison’s mind. Just last week Mary confessed that her twin sister Jessica (Andrea Parker) used to steal everything from her growing up — ultimately taking her newborn baby from her. This started softening Alison up. However, that doesn’t necessarily mean she trusts her.

More secrets about Mary will be revealed when Aria (Lucy Hale), Emily (Shay Mitchell), Hanna (Ashley Benson) and Spencer (Troian Bellisario) make a discovery about the DiLaurentis family that “leads them to a storm cellar full of clues.” But what exactly will be down there? Perhaps information on who Charlotte’s biological father is.

That won’t be the only mystery haunting the Liars in episode 7. Aria’s recent engagement to Ezra (Ian Harding) could take an interesting turn when he gets a “call about someone from his past.” Could that someone be his ex-girlfriend, Nicole (Rebecca Breeds)? She’s believed to be dead, but “Pretty Little Liars” fans can think of a few characters who have come back from the grave.

The big shocker in Tuesday’s episode will revolve around Noel Kahn (Brant Daugherty). He returned to Rosewood in episode 5 and appeared to be working alongside Jenna (Tammin Sursok). His exact plans are unclear, but it’s certainly suspicious that Sarah Harvey (Dre Davis) ended up dead in episode 6. We’d say it’s safe to assume that he’s up to no good.

Catch “Pretty Little Liars” Season 7, episode 7 on Freeform on Tuesday, August 9 at 8 p.m. EDT.