There have already been a ton of spoilers about Pretty Little Liars Season 4, from tiny details to big revelations. Which clues are the most important? Of course, we can't say for sure, but we've rounded up the five spoilers that strike us as the most exciting and interesting so far.

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Lots of Sasha Pieterse (Alison) — But No Alison Twin? We can definitely expect a lot of Sasha Pieterse this season, but it sounds like the writers maybe aren't going to go down the path of Ali having a secret twin. Does that, combined with what we saw in the Season 3 finale, mean Alison is definitely alive? That hasn't been confirmed, but things certainly seem to be pointing in that direction, especially given that the Season 4 premiere is called "'A' Is for A-l-i-v-e."

Mona Spills. Exciting news: In the premiere, Mona is going to be spilling secrets, probably because she's kind of teamed up with the Liars now. If anyone has answers for the girls, it's going to be "A" numero uno.

New cops. There are two state police officers in town. Given how much trouble law enforcement has often been for the Liars, we're very interested to see how these new characters will shake things up.

A flashback to Toby's past. We're going to see a Toby flashback, potentially featuring his mom. Given how many questions we still have about his involvement with the "A" team, we can't wait to find out more about his past.

Ezria? It sounds like Ezria really and truly will be apart for at least a little while. Maybe. Probably.

What are you most looking forward to next season? Sound off in the comments below!

Find more Pretty Little Liars spoilers here.

Pretty Little Liars Season 4 premieres on Tuesday, June 11, 2013 at 8 p.m. ET/PT on ABC Family.

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