The Twilight Zone (2002) (2002)

S1E25 Fair Warning

Tina, who works at a flower shop, becomes the target of an unstable man named George, who vanishes after she pleads with him to end his threats against her. When Tina encounters him again, he presents a solid alibi and denies having any connection with her. Despite this, George continues to appear in her life, unseen by anyone else. As his visits persist, Tina starts to doubt her own mental stability, wondering if she’s losing her grip on reality.