What is girl in the basement based on?

The Girl in the Basement is a psychological thriller film released in 2021. The film follows a young girl named Sara who is kidnapped and held captive in a basement for years by her own father. As she struggles to survive and cope with her traumatic experience, she begins to form a bond with another captive in the basement. The film explores themes of abuse, trauma, and survival, and delves into the complex emotions and psychological effects of being a victim of captivity. The Girl in the Basement offers a chilling and thought-provoking look at the horrors of domestic abuse and captivity.