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As many Pretty Little Liars fans know by now, a major spoiler revealed that someone is going to die in Season 3, Episode 21: "Out of Sight, Out of Mind."

To help aid speculation, we've rounded up all of the biggest spoilers suggesting which characters can't die, because they're supposed to come back later in the season.

The Liars. Based on the press releases about — and pictures from — future episodes, it's clear that all four Liars make it out of Episode 21 alive. No surprise there!

Mona. Mona (Janel Parrish) is alive and well in Episode 22, and it sounds like she makes it all the way to Season 4.

Ezra. Ezra's (Ian Harding) still alive and kicking in the finale. Another total non-shocker.

Caleb. Hanna is still dealing with Caleb's (Tyler Blackburn) family drama in Episode 23.

Dr. Sullivan. Dr. Sullivan (Annabeth Gish) in alive in Episode 22.

Shana. She's alive in Episode 22, because she's the one who introduces Em to a very special guest star.

Wren. Sorry Wrencer haters, Wren (Julian Morris) is still around in Episode 23.

Ella Montgomery: Mama Montgomery appears to be alive and well for Episode 24.

Jenna? We know we find out a big secret about Jenna (Tammin Sursok) in the 3B finale which suggests she's alive, but maybe not.

Spencer's family? The synopsis for Episode 22 says Spencer (Troian Bellisario) is AWOL, and "even her family doesn't know where [she] has gone." That casual mention makes it sound like the whole family is intact, though that could be misleading. 

Toby? Although we've speculated that the death could be Toby, everything the cast and crew have said about Toby's arc this season suggests there's still too much to be explored for him to die, at least right now. Plus, it sounds like he's in the finale.

Did we miss anybody?

Find more Pretty Little Liars spoilers here.

Catch the next episode of Pretty Little Liars on Tuesday, February 26, 2013 at 8 p.m. ET/PT on ABC Family.

Rebecca Martin is an editor at Wetpaint Entertainment. Follow her on Twitter @BeccaDMartin