Cyrus Petrillo is a character first introduced in Season 5 of Pretty Little Liars. The Rosewood Police arrest him on suspicion of kidnapping Alison DiLaurentis, a crime in which he falsely confesses to. He is portrayed by Jake Weary.
Series


In a flashback, Cyrus and Alison walk down into the abandoned basement where Alison introduces Cyrus to her friends. Alison wakes up from being asleep to find Cyrus taking her bag. As Alison tries to pull her bag off of Cyrus’ shoulder, Cyrus tells her to “get off”, before he engages in a physical fight with her. Slamming Alison against a wall, Cyrus covers her mouth so she cannot scream, and taking a knife, Cyrus stabs Alison in the thigh. Grabbing Alison’s bag, Cyrus takes the hand of one of Alison’s friends, and the two of them head up the stairs, leaving Alison below.
In the woods, Cyrus shuffles aimlessly until Alison approaches and he tells her that he was beginning to think she might not show. Saying that there is a warrant out for his arrest, Cyrus goes on to say that he barely made it out in time and that it wasn’t the deal they made. Reaching into her jacket pocket, Alison tells him he’s lucky there was even a deal at all, and that she should have left him for dead when she found him. Grabbing the plane ticket, Cyrus tells Alison they he could have told the police the truth about her, how they met and “all the fun we had together”. Alison tells him she could have as well, but then they both lose and this way, they both win. As Cyrus starts to walk off, Alison tells him that she found him once and he can bet his life she can find him again. As Alison says that this is his once chance to start over and he better use it, Cyrus turns back to her, “the way you’ve used it, Ali?” Turning back, Cyrus gets into his car and drives away.
No One Here Can Love or Understand Me
Although not in this episode, Cyrus is seen in a photograph with Alison at an ATM, 16 months prior to current events. On Emily's request, Ezra finds out that Cyrus has several other alias and he's been arrested half a dozen times.

Sitting in the diner, Cyrus and Mike talk.
Starting up his motorbike, Cyrus goes to leave the diner, but his path is blocked by Emily, Aria and Spencer. Revving the engine, Cyrus chases the girls until they’re cornered at some dumpsters. Cyrus questions whether they’re at the diner to watch the kid or him, and when the girls don’t answer, Cyrus tells them that he doesn’t like being followed. Spencer says that he has something that belongs to them, and questioning that he does, Cyrus listens as Aria says that they just want it back. As Cyrus comments that maybe they can work out a trade, Andrew steps out from the shadows and tells Cyrus to back away from the girls. Looking over his shoulder and noticing Andrew with a baseball bat, Cyrus laughs, before starting up his motorcycle and riding off.

Cyrus is sleeping as ‘A’, who is dressed as a burn patient, walks over to him.
Appearances (4/160)
Season 5 (4/25)
Notes
- Cyrus admits to kidnapping Alison and holding her hostage.
- He gave Alison the scar on her thigh.
- He has several aliases and has been arrested half a dozen times.
- He was severely burned at work by 'A', whom he knows as 'Varjak'.