'Pretty Little Liars' Sneak Peek: Aria Is Concerned About Mike

Cody Christian plays Mike Montgomery on Pretty Little Liars. Photo Credit: ABC Family/Gilles Mingasson

Red flags are raised when a stranger arrives in town in tonight's episode of Pretty Little Liars, airing at 8 p.m. ET/PT on ABC Family.

Aria, Emily, Hanna and Spencer have been burned before by newcomers to Rosewood, so it's no surprise the four ladies are wary when someone new crosses their path. Spencer lets down her guard a bit as she spends more time with Jonny, and Emily continues to try and figure out Talia as she keeps getting mixed signals from her co-workers. When Mona's friend Lesli shows up in town, Hanna is tasked to get her back story and find out if Lesli is really who she says she is. Are the girls wise to keep an eye on everyone, or can they allow a bit of comfort room without worrying it is an "A" trap?

Meanwhile, Aria becomes concerned about Mike's (Cody Christian) recent behavior and Holbrook (Sean Faris) returns to town.

Mike and Aria talk about Mona in the sneak peek video below:



Pretty Little Liars stars Troian Bellisario, Ashley Benson, Tyler Blackburn, Lucy Hale, Ian Harding, Laura Leighton, Shay Mitchell, Janel Parrish and Sasha Pieterse.

The series is produced by Alloy Entertainment in association with Warner Horizon Television and is executive produced by I. Marlene King, Oliver Goldstick, Leslie Morgenstein and Joseph Dougherty.