Glenn Close has revealed that spending her childhood in a cult has left her "psychologically traumatized".
The actress appeared in Prince Harry and Oprah Winfrey's new AppleTV+ show titled The Me You Can't See, which focuses on mental health.
Close, 74, revealed that her father, Dr. William Taliaferro Close, joined a conservative religious group, Moral Re-Armament, in 1954 when she was just seven years old, per Entertainment Tonight.
She recalled that her dad was so involved in the organization that he even moved the entire family to the group's headquarters in Switzerland. Close lived there with her family for 15 years before she enrolled in a Virginia college at the age of 22.
In the final episode of the mental health docuseries, Close told Oprah: "It was basically a cult. Everybody spouted the same things and there were a lot of rules, a lot of control. It was really awful."
The actress admitted that her time in the cult resulted in her being unable to secure lasting relationships.
"Because of the devastation, emotional and psychological of the cult, I have not been successful in my relationships and finding a permanent partner and I am sorry about that," she said.
"I think it is our natural state to be connected like that. I don't think you ever change your trigger points, but at least you can be aware of them and maybe avoid situations that might make you vulnerable, especially in relationships."
She went on: "It's astounding that something you went through at such an early stage of your life still has such a potential to be destructive. I think that's childhood trauma. I am psychologically traumatized."
Close also opened up about mental illnesses that her family members had experienced, in particular her sister Jessie Close and Jessie's son, Calen Pick.
She recalled her sister reaching out for help when they were at the family's ranch in Wyoming.
Close said: "I remember her kids were already loaded in her car and she came up to me across the driveway and said, 'I need help. I can't stop thinking about killing myself.' For me, it was a shock."
Ultimately, her sister got the help she needed, with Close adding: "She ended up in McLean Hospital - a psychiatric hospital in Massachusetts - I took her there. She was finally, at age 50, properly diagnosed as bipolar 1 with psychotic tendencies.
"Jessie told me she was afraid that if parents found out that she had bipolar 1 that they wouldn't allow their children to play with her daughter."