Tales from the Crypt (1989)

S2E16 The Secret

Twelve-year-old Theodore, an orphan, finds himself adopted by an eccentric couple who confine him to the attic. While they are preoccupied with their work, he is left longing for adventure and joy. Unbeknownst to him, his new guardians possess a sinister secret, and in a twist of fate, he too is hiding something significant. As Theodore navigates his confined existence, the tension of their concealed truths looms, setting the stage for an intriguing revelation.