
Bret escapes by shining the headlight of his car and drives away. She traps Rebecca and Martin in the basement and attempts to kill Bret. This proves useless when Diana cuts the power to the neighborhood. To avoid an attack from Diana during the night, they rig the house to be as brightly lit as possible. The group stays the night at Sophie's, intending to get her help in the morning. Sophie becomes irate but secretly asks Rebecca for help, as Diana will not let Sophie go. Rebecca, her boyfriend Bret, and Martin stage an intervention with Sophie about how Sophie is letting Diana haunt them. Diana's father committed suicide after Diana got into his head and influenced him to kill himself. It was believed that she was evil and was able to "get into people's heads".
TURN OFF LIGHTING ANALYSIS ECOTECT SKIN
Diana suffered from a severe skin condition that meant she could not go out in sunlight, and was accidentally killed by the hospital staff when they tried an experimental surgery on her under intense light. While there, she befriended a young patient named Diana. His findings reveal that her mother was admitted to a mental hospital as a child. Rebecca finds a box of medical records and research in Paul's office. She remembers finding the same name and drawing as a child, and realizes Diana is real. The next morning, she notices the name "Diana" has been scratched into her floor, along with a scratch drawing of a stick figure. She narrowly escapes an attack when she turns the lights on, making the woman disappear. That night, Rebecca is woken by the same shadowed woman that killed Paul. Rebecca gets into an argument with Sophie when she realizes her mother is not taking her medication, so she takes Martin to her apartment.

Rebecca assures him that Diana is not real, and that she had also heard their mother talk to the imaginary girl when she was a child. Martin tells his sister that their mother has been talking to a woman named "Diana". Rebecca tells the official that Sophie has depression and is taking antidepressants. A Child Protective Services agent questions Rebecca about Martin's living conditions. The nurse was unable to get in touch with Sophie to inform her that Martin has been falling asleep in class lately. Rebecca and Martin are half-siblings, sharing the same mother, Sophie.

Paul's stepdaughter Rebecca is called into the school nurse's office because of her brother, Martin. After she leaves, her boss Paul encounters the woman and is killed. In a textile factory during closing hours, an employee named Esther encounters a silhouette of a strange woman with claw-like hands when the lights are off, but cannot see it when the lights are on. The film received positive reviews from critics, with many praising the direction, screenplay, acting, photography and musical score, and grossed $148 million against a budget of $4.9 million. The film had its world premiere at the Los Angeles Film Festival on June 8, 2016, and was released in the United States and Canada on July 22, 2016, by Warner Bros. Principal photography for the film began in June 2015 in Los Angeles.

After the short film's success, Sandberg announced a film adaptation based on his short film. In the film, a young woman must confront her childhood fears to protect her brother from a vengeful supernatural entity holding a mysterious attachment to their mother. It is based on Sandberg's 2013 short film of the same name and features Lotta Losten, who starred in the short.

It stars Teresa Palmer, Gabriel Bateman, Billy Burke, and Maria Bello. Sandberg in his directorial debut, produced by Lawrence Grey, James Wan, and Eric Heisserer and written by Heisserer. Lights Out is a 2016 American supernatural horror film directed by David F.
