Pretty Little Liars season 5, episode 21, “Bloody Hell” airs tonight at 8 p.m ET on ABC Family! Check out all the stills and this week’s promo to get you ready for the new episode.

Last week on Pretty Little Liars, we finally learned what Mike has been up to when he admitted to hiding Mona’s vials of blood in the woods. Apparently, Mona was in cahoots with “A” and was supposed to fake her death, but now Mike believes that Mona may actually be dead. Meanwhile, Emily decided to take Hanna’s place in the pageant since Hanna was becoming a bit over zealous in all the wrong ways. Spencer and Jonny’s relationship got a little heated when Jonny kissed her, shortly after Toby arrested him for stealing the paintings from the gallery.

To catch up on all the details of last week’s episode, you can read the full recap here.

The synopsis for ‘Pretty Little Liars’ season 5, episode 21:

“Equipped with their new information about Mona, the Liars decide they need to speak to Alison. But once the truth is out there, Aria quickly learns that Mike’s involvement with Mona and this new revelation could have serious repercussions for her family. Determined to keep Mike safe and get Ali out of jail, the Liars intensify their search for information on ‘A.’ Meanwhile, Spencer heads to London for an important college interview, and Alison looks to someone surprising for help with her murder trial.”

Stills for ‘Pretty Little Liars’ season 5, episode 21, ‘Bloody Hell’:

Watch the promos and clips for the episode below:

Where to watch ‘Pretty Little Liars’ season 5, episode 21, ‘Bloody Hell’ online:

If you cannot watch Pretty Little Liars live, ABC Family will put the episode on Hulu the next morning or you can set your DVR and watch it whenever you’d like. As always, try to avoid Twitter if you don’t want to risk getting spoiled.