The Invisible Teenager (1962)

Driven insane by his invisibility, Don Griffin (played by Don Glut) has been locked away in a psychiatric hospital. Griffin is obsessed with revenge against a friend whose court testimony resulted in Griffin being institutionalized. So obsessed, Griffin escapes and seeks out his old friend. His friend talks the invisible Griffin into a game of pool. Once the game had ended, Griffin dons his clothes and bandages. Fearing for his life, Griffin's friend shoots him, with death returning Griffin to visibility.