Falling Skies' Lexi may be the bridge between the Espheni and the humans, but it looks like the youngster will soon have to choose side.

Interesting Hal & Lourdes Meeting In The Cards On 'Falling Skies', Drew Roy Talks Search For Brothers

Anne (Moon Bloodgood) and her team made it to Lexi's Chinatown oasis during "Exodus," but the Espheni have had the hybrid's ear in her four-month absence. Unfortunately, Anne will get a first hand glimpse at The Monk's meddling during "Evolve or Die" (see video below).

"It is complex because although Lexi is grown up, she is still a little child inside, despite her outward appearance," Byrne explained to Three If By Space.

Maggie Isn't The First Of Hal's Girlfriends Ben Liked On 'Falling Skies', Drew Roy Explains Past Problems

It is this childlike attitude that will make Lexi susceptible to the persuasion of the Monk.

"For the first time we meet overlords as characters," Connor Jessup (Ben) explained in a behind-the-scenes video for "The Eye." "One of the overlords is called The Monk. He's sadistic and cruel and manipulative, but at the same time you learn things about them and about their intentions that make you reconsider - or question, at least - things you thought you knew."

Whose side will Lexi choose to align herself with? Or will Tom Mason's daughter continue to play to the middle?

Find out more when Falling Skies airs Sundays at 10 p.m. ET on TNT.