Harris will play Nathaniel, a meek and troubled patient at a mental institution who finds himself trapped under the thumb of its evil and overbearing warden, Jacob (Witwer), who takes pleasure in tormenting his most disturbed and helpless patients.
Once Upon a Time tells the story of a new world where fairy-tale legends and modern life collide. Emma Swan (Jennifer Morrison) is comfortable in her life as a bail bonds collector when Henry — the child she gave up a decade earlier — suddenly shows up, convinced that she is the daughter of Snow White and Prince Charming, who sent her away before the Evil Queen could cast a spell, freezing the fairytale world in time and bringing them to present-day Storybrooke, Maine. After taking Henry home, Emma decides to stay in the town to keep an eye on him, and she discovers he may not be wrong after all.