Do you have any movie recommendations about a young boy with a split personality who kills people?

The movie was about a group of people trapped in a supermarket, and people kept getting killed. The main character was a girl in her twenties. She was very afraid, but after her judgment, she found out that the killer was actually a teenage boy. She told the other survivors, but no one believed her because no one had seen the boy. In the end, the police came and took the girl away. In the end, the little boy that the girl saw was actually him. He killed someone himself, but he didn't know it was someone else. He always thought he was a 20-year-old girl.

Answer 1

"Movie Master" is a novel written by the author, Wally the robot, about an urban and entertainment star. The general plot of this novel is:

From a bad boy to a man, from a nobody to a global idol.
From a genius youth to a movie master, how many roads must he walk?
He had no regrets about his friendship, his youth, his dreams, and his resistance to the world.
"Primitive tribes respect storytellers, but if they don't tell a good story, they will kill them and eat them for dinner."
Ye Wei didn't want to be eaten. The moment he stepped onto the road of film, he was destined to be a unique legend.
A movie master was rising…
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The Reborn Killer was a novel about urban life written by Han Enjia. The general plot of the novel was:

This was a story about the growth of an assassin. It was very real and sad...
He was a waste abandoned by the world. After being trampled and crushed, he never looked at him again.
No one had ever entered his world. No one cared about his thoughts or his tears.
There was only loneliness.
There was only coldness and darkness.
Assassins.
This dangerous, synonymous with the source of evil had always haunted him.
It could not be erased or replaced.
Was it rebirth, or was it another destructive trap…
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Movie Rhapsody was an urban entertainment novel written by the author, God Said I'm a Demon. The general plot of the novel was:

He was a serious student who was biased in his subjects. He was the first in his Chinese and English grades, but he was always the last in Mathematics and Chemistry. He skipped classes, fell in love, and fought. He wrote and drew all day long, and occasionally laughed and called himself a " genius." He spent money to attend expensive art and directing classes, saying that he wanted to apply for the Beijing Film Academy. He was a " bad student " in a key high school. He said that he wanted to make a youth short film as a stepping stone to enter the Beijing Film Academy, and then began to look for beautiful female leads...
He was the champion of the second New Thinking Essay Competition and was good friends with Han Han, who was the champion of the first competition. He was in the same year as Huang Shengyi, Wang Ludan, and Yao Di. Liu Yifei was his junior sister, and Huang Bo, who was a few years older than him, was his junior brother…
This was a novel about a director's self-growth. It would involve writing, screenwriting, acting, and so on, but the main focus would be making movies.
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" The Seven Deadly Sins of a Full-time Hunter " was a light novel by the author, Lei Zou. The general plot of the novel was:

He had transmigrated to become a member of the Anti-enemy family. He was the twin brother of the Ilmi family and the eldest brother that Qi Mo respected. He began to receive assassination training at the age of three and began to carry out missions at the age of six. His hands were stained with blood, and the bones under his feet formed a mountain. His legend began as an assassin. Hunter, Ghost Extinguisher, Pirate…
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The book " The Valiant Assassin " was a fantasy novel written by the author, Ji Wushang. The general plot of this novel was:

The assassin's story, the adult's story.
How did the sincere youth become so cynical here…
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" The Mastermind of the Movie World " was a sci-fi time-travel novel written by the author's wretched cousin. The general plot of the novel was:

Orphan Le Yan transmigrated to the movie world. His father had a plane crash right after he transmigrated, leaving him a large amount of wealth. He thought that he would become a rich man and live a carefree life, but after checking the things his father left for him, he realized that his father, who had always been kind, did not seem to be a good person…Then, as a little sun, he was involved in all kinds of strange things with women, and his body became more and more strange. In the end, he inexplicably became the BOSS behind the scenes of the villain.
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The novel Killer Babysitter was written by the author, Little White Thirteen, and it was a novel about urban supernatural powers. The general plot of the novel was:

Six years ago, the world-famous assassin group, the Dark Night Assassin Group, was an organization from hell that made the leaders of the world scratch their heads. With his undefeated record, he became the pinnacle of the assassin world at that time and became the " nightmare " of many people! When the organization was at its peak, as the leader of the twelve assassins under the Dark Night Killer Emperor, he was called White God! The man had mysteriously disappeared and his whereabouts were unknown. Six years later…in a bustling city, a pair of silly father and daughter appeared. They lived an ordinary life, but danger quietly came to their side. While escaping from the pursuit…
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" Campus Storm Record " was a novel written by the author, Sow's Resplendent, about an urban youth campus. The general plot of this novel was:

A 12-year-old boy went to school far away from home alone. He had always been timid, but he had somehow entered a problematic dormitory. Here, he had found the friendship he wanted. Because of the appearance of a girl, his life changed. He fell in love with that girl at first sight, but she rejected him because she was weak. The girl's words had affected his entire life. The story began when he took out a knife and stabbed the other him…
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" Exorcist Youth: Book of Judgement " was a light novel by the author, the genius Little Honey. The general plot of this novel was:

This was a weapon made from [Soul],[Tragedy], and [Machinery]. The soul was its driving force, and the call of a loved one would bring the dead back to reality. Tragedy was buried in the human heart. Do you have any relatives you want to resurrect? Then call out his name! However, this sadness would be used by the Millennium Earl to create a killing weapon called the Devil. This was a war between the Noah race, who claimed to have been chosen by the gods, and the chosen ones who responded to the will of the gods. Therefore, in this war that lasted for a thousand years, countless souls could not rest in peace, and heavy sins repeated in the cycle of reincarnation.
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" Apocalyptic Slaughter Saint " was a sci-fi and apocalyptic crisis novel written by the author, Eat Child. The general plot of this novel was:

Ye Hen was one of the strongest assassins in the world. Walking on the edge of death, the peak slaughter was silent. Lonely and lonely, with a heart as cold as ice, ruthless in his attacks. Ancient martial arts shocked the world, and it was the abyss of hell for everyone. The apocalypse was a paradise for him to kill. Everything was in the " Apocalypse Killing Saint " ordinary group chat: 512162428 If you don't like it, you can hit me!