The quiet anchor. Mitchell had the toughest job: playing the shy, sensitive athlete whose journey of self-discovery (realizing she’s a lesbian) is the season’s most earnest arc. In early episodes, Mitchell can be stiff, relying on wide-eyed stares. But as Season 1 progresses, she grows into Emily’s quiet strength. Her scenes with Maya (Bianca Lawson) are tender and authentic, and her terror when “A” threatens to out her is genuinely gripping. Mitchell doesn’t get the flashy lines, but she nails Emily’s internal conflict—loyal daughter versus authentic self. The Adversaries & Wild Cards Janel Parrish as Mona Vanderwaal The secret weapon. In Season 1, Mona is presented as Hanna’s shallow, fame-obsessed BFF—a pawn in the high school mean-girl game. Parrish plays this role with such bubbly, plastic perfection that you almost dismiss her. But re-watching with hindsight, Parrish plants subtle clues: a flicker of malice behind the smile, a knowing glance when “A” texts. Her transformation from ditz to… well, that … is a masterclass in long-game acting. Season 1’s finale recontextualizes every scene she’s in.
The emotional barometer. Hale, already a known face from teen dramas, brings a natural, grounded quality to Aria, the returning “outsider.” Early episodes rely on her to sell the forbidden romance with Ezra Fitz (Ian Harding). Hale’s strength is in her eyes—she can convey giddy infatuation, searing betrayal, or quiet terror without overacting. However, Season 1 occasionally reduces Aria to “the one with the teacher boyfriend,” and Hale sometimes struggles against the writing’s tendency to make Aria’s problems feel less urgent than the others’. Still, her chemistry with Harding is undeniably electric. pretty little liars season 1 cast
Troian Bellisario Most improved by season’s end: Shay Mitchell Most iconic scene-stealer: Sasha Pieterse Chemistry MVP: The Core Four + Ashley Marin The quiet anchor