Fortunately, I watched the full version and knew the full ending.
Most film critics treat the two bear kids as accomplices, put them together, and think that their crimes are equal. But I think the culprit of everything is actually Ethan alone, and his experiment on the elderly living alone is just a revenge. Sean is just his target, because Sean's family has money and Sean has the brain to help him realize this plan. Therefore, the two bear kids do not belong to the same camp.
The following is my understanding and sorting out of the plot (including spoilers):
Ethan’s father had committed domestic violence to his mother. His mother then fled to the elderly’s home to seek help. Under the testimony of the old man, Ethan’s father was sent to prison. Afterwards, his parents divorced and Ethan was raised by his mother. Ethan believed that the intervention of the elderly caused the breakdown of the family, so he held a grudge.
'After that, Sean moved to the vicinity of Ethan's house and had no idea about Sean's holiday with the old man. After getting acquainted with Sean, Ethan thought that Sean's financial strength and brain could help him retaliate against the elderly in a unique way, so he planned this "experiment" and put it into practice.
During the experiment, whenever new tricks are used (open and close the door, interfere with the lights and TV signals, switch the radio, turn off the heating and break glass, etc., as well as the mentioned but not yet implemented mobile furniture), wait for a good show Almost all of them are Ethan. I think Ethan’s plan was originally to cause the accidental death of the old man through fright. But what Ethan didn't know was that the objects they used caused the old man's memories of his dead wife, which caused the old man to have the illusion that the dead wife was calling himself.
When they used tricks to scare the old man, the old man used to hide in the basement for a long time to deal with it. Ethan became very interested in what was in the basement, and at one time he paranoidly believed that the old man had committed a homicide and had a crime. It's in the basement. Once these crimes are exposed, the old man can be sent to prison, thus avenging his father. When the two tried to introduce the note into the old man's basement to see no results, Ethan still decided that the note hadn't been read carefully enough and he had to look for it himself. However, the two said at first that they would only observe and not touch during the experiment. From this time on, Ethan began to gradually exceed the boundaries, and Sean gradually began to reject the experiment.
When Sean discovered that Ethan was monitoring himself, he broke out and began to question Ethan's purpose, and decided to suspend the experiment and retrieve the equipment.
Later, because a camera was taken off by a cat, Ethan sneaked in and wanted to retrieve the camera. When he left, he found that the basement was unlocked. He couldn't help but enter the basement to check. He accidentally touched a key item, the handbell, and accidentally turned it off. Take it out and place it on the back of the sofa. The handbell is a gift from the old man to his seriously ill wife, and he told her that if he rings the bell, he will show up. Therefore, the appearance of the bell and the bell implied that the old man's deceased wife was beckoning herself, leading to the excessively missed old man drinking a bomb and going to a meeting with his wife.
The final outcome: The two were sentenced to light sentences. When they walked out of the court, Ethan showed a weird and successful smile on his face. Indeed, its purpose has been achieved, the old man died, and he was basically free from sin. During the whole process, Sean was only a victim, and Ethan was the only culprit.
The film's grasp of the suspense is relatively moderate. As the plot advances, all causal reasons are explained directly, and the plot is logical, and the audience does not need to bother to reason, so it is easy to watch, and it is enough to watch it once. So I think this film is also a better way of expression.
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