Lights Out (2010)

March 1992, in a small town in the suburbs of Paris. During an alcohol fueled party, teenagers discover a body hidden in the bushes of a forest. A body that seems lifeless. Two weeks earlier. Simon, a 16 year-old teenager, has not shown up for class. Blood stains are found in a class-room. Run-away, kidnap, suicide, murder? A few days later, Laetitia, a student from the same class goes missing without her parents knowing where she has gone. A young girl with no dark background or connection to Simon. The next day, Jean-Baptiste, a third student, also disappears. Rumors start to spread. The psychosis begins...

Unfortunately the movie Lights Out is not yet available on HBO Max.