What is the scariest plot in Harry Potter?

The scariest plot that impressed me the most should belong to the scene in "Harry Potter and the Order of the Phoenix" where six talents broke into the mystery department at night. They walked through every weird room in the mysterious department of the dark and uninhabited Ministry of Magic and saw the most profound things in academic magic: astrology, time, the veil of death, thoughts and predictions ... It was terrible quiet that night. The chapter about the Department of Mysteries is especially suitable for reading in the dead of night, so the gloomy effect is ten times creepy.

I watched "harry potter and the half-blood prince" in the dead of night, and saw Harry and Dumbledore crossing the black lake in the cave in a small boat ... I still remember the feeling at that time, and the hairs on my back stood up one by one. Harry Potter And The Prisoner Of Azkaban wakes up slowly after encountering a dementor on the train. There is no fear when watching, but there is a feeling of fear.

In fact, I think the really horrible plot is exactly what Rowling did not describe positively, that is, Dumbledore's anger. In Harry Potter And The Prisoner Of Azkaban, Harry falls down in a Quidditch match under the influence of dementors.

When he woke up, he found that everyone around him mentioned Dumbledore's real anger, which scared everyone into silence. Looking back now, I feel that there are really many scenes that are really horrible and I can't help but want to watch them again.