Although Dumbledore had told everyone to forget about Mrs Norris being killed and the bloody writing left on the wall, many students continued discussing the incident over the next few days.
They knew it had nothing to do with Harry and his friends, but whatever plot lay behind it filled the students with curiosity and anticipation.
As a result, many students speculated about the incident.
Then, a few days later, just as the discussion began to die down, a string of strange incidents occurred at the school.
A student who got up to use the toilet in the middle of the night somehow ended up hanging in the bathroom. Fortunately, someone discovered the student in time, and their life was not in danger.
Had that been all, it might have been dismissed as an accident.
But when one or two incidents occurred every day in different houses, it became a different matter.
For instance, blood was splashed around a dormitory, leaving behind the word "death."
Demon Vines suddenly appeared in the school and attacked students or professors.
During a flying lesson, all the first-year students' broomsticks suddenly went out of control, injuring quite a few of them.
Students also suffered food poisoning while eating.
The string of incidents plunged the students of Hogwarts into panic.
To uncover the truth behind these incidents, Dumbledore, Severus Snape, Professor McGonagall, Professor Flitwick, Professor Trelawney, and others patrolled at set times every night. Even during the day, they made time to investigate the incidents.
Dumbledore also questioned every ghost in Hogwarts Academy.
"Kate, Professor McGonagall told me you have a Crystal Ball that can show you everyone in Hogwarts School?" Dumbledore sought out Katelyle and asked.
"No, it can't," Katelyle replied with a smile.
Dumbledore pondered for a moment, his thoughts unreadable.
Katelyle did