Life will get more complicated for the Liars in the upcoming episode of "Pretty Little Liars" season 5.

Based on the official synopsis for the episode titled "Bloody Hell," the Liars make up their minds to visit Alison (Sasha Pieterse) in jail to talk to her about the latest information that they learned about Mona (Janel Parrish). However, Aria (Lucy Hale) soon realizes that her brother Mike's (Cody Christian) revelation about his involvement with Mona and "A" could bring a lot of problems for their family. 

Still, Hanna (Ashley Benson), Emily (Shay Mitchell), and Spencer (Troian Bellisario) do everything that they can to help Aria keep Mike out of jail by intensifying their search for information to lead them to "A."

Meanwhile, the stars of the show all claimed that the upcoming season 5 finale of "Pretty Little Liars" titled "Welcome to the Dollhouse" will be the most shocking ending among all the seasons of the show. 

Actor Keegan Allen, who portrays the role of Toby Cavanaugh in the series, shared his views about the final episode of season 5 in an interview with Bustle last year.

He said, "I can't say anything, except we all read it together in the room and every single one of us ... you have to understand we've been doing this, creating this world for so long now it's hard to surprise us with anything. This surprised us all, and it's something that — it's just incredible. I mean it is so tremendous. So, I can just promise it will go down in history as crazy. Totally mind-blowing."

Shay Mitchell also shared her own views about the episode in her interview with Wetpaint, saying that she and the rest of the girls believe that the second half of the season is the most favorite so far, and the last episode is very "unexpected" and "insane." 

Also, "A's'" identity is expected to be revealed in the finale of season 5. 

"Pretty Little Liars" season 5 episode 21 airs on Feb. 24.