These 10 Terrifying Scary Movies Will Have You Sleeping with the Lights On

When a mysterious stranger arrives in a South Korean town with his dog, at the same time, the townspeople begin going mad and offing their entire families. One police officer is tasked with solving this curious case. Is the new resident causing the murders, or is it something else?

A composer with a tragic backstory moves into an old mansion in Washington state only to discover the ghost of a young boy who died in the bathtub. As he unravels the truth behind what happened to the poor boy, everything is not exactly as it seems.

A woman who lives alone with her child begins encountering an evil invisible force that does despicable things to her in the dark of night. After being gaslit by a psychologist, the woman turns to her friends to help her stop the attacks and uncover the ghost's identity.

When a conservative Christian detective visits an island where a child recently went missing to investigate, he is uncomfortable with the fluid and sexual nature of the island's culture. But, as he dives deeper into the island's customs, he uncovers more details about the missing person's case.

Haunted by a ghost created by their university's parapsychology experiment, a young couple seeks the help of a paranormal researcher to get their life back. But can they ever escape the apparition that is always watching?

After losing her husband and daughter in a tragic accident, a young woman and her adventurous friends take a trip to hike in underground caverns. However, once they descend into the darkness, they discover a horde of humanoid creatures hunting them and their friends down.

This atmospheric and unsettling film follows a married couple who recently lost their daughter in an accident. They soon move to Venice, where the wife becomes convinced that two locals can communicate with the spirit of her late daughter. Her husband, however, needs more convincing.

Critics applaud this found footage horror film as one of the best in the business. A group of students working on their thesis decides to follow Deborah Logan, an older woman with dementia who lives with her daughter.

But strange things begin to happen in the darkness, making the students believe that Deborah and her daughter aren't the only ones living in that house.

French horror film Martyrs is about revenge gone wrong. Two women who were victims of horrific abuse as children decide to go on a mission to hunt down their abusers. But turning to a life of crime and hatred only leaves them worse off than before.

This thread inspired this post.

Australian psychological horror Lake Mungo is about the mysterious death of a woman whose life was just as puzzling as the events of her death. So when her family senses a ghost in the house after her death, they hire a parapsychologist to get to the bottom of the secrets.