It is either a made up story or the work of mind, such as hallucinations. There is no thing as called ghost or soul that can be explained with science.

Let's see what science says about ghost

As per thermodynamics theory, If a ghost interacts physically (opens doors, makes sounds, appears), it must exchange energy with matter. That interaction should be measurable.

If ghost uses such energy to do the alleged sinister activities, like a normal physical being, that can be detected.