Jack Nicholson’s sister was really his mom
In 1974, Jack Nicholson was surprised to learn that he had a secret twin brother. During an investigation of the actor’s background, a reporter learned that the woman whom Nicholson thought was his sister was actually his mother.
Jack had a grandmother who raised him like her own son. At a young age, June Nicholson became pregnant, and her mother, who was actually Jack’s grandmother, raised him as if he were her own. For decades, the truth remained hidden from him; only when he was 37 did he discover it.