There was a brief silence in the bathroom.

Harry Evans stood there, her back to the light, making it impossible to see the expression on her face.

"Go on!" she said coldly.

"If I wanted to infiltrate Hogwarts under a reasonable identity, I would have chosen to disguise myself as a first-year student. Matthew continued to speak unhurriedly: "After all, students above the second grade have certain social interpersonal relationships, and if there is a slight misdemeanor, it is easy to attract the attention of others, and many times this is very fatal......

"First-year students, who are wizards or semi-wizards, need to keep in touch with their families and go home on holidays, and if something is wrong, parents may write to the school, which is undoubtedly easy to ......."

"So at first, I thought the real culprit who was responsible for the series of events was disguised as a Muggle-born student, but I soon found a more suitable person for disguise—"

Matthew said coldly, "Harry Evans, the child of a wanted criminal...... His mother wouldn't write to Hogwarts, and even if he didn't return for Christmas or Easter holidays, her mother wouldn't dare come to Hogwarts for 'theorizing', right?"

Harry Evans suddenly smiled, "Yes, you're right!"

"I'm guessing you had your eye on young Mr. Evans a long time ago, and then attacked him before he boarded the Hogwarts Express, after all, his mother didn't dare to get him on the train at King's Cross Station, and then drank a polyjuice potion made from his hair and took on his appearance. ”

"In order to reduce the attention of other people as much as possible, you created Harry Evans into an extremely introverted character who is reluctant to communicate with other people. Matthew continued: "But it's too deliberate, and there are just too many loopholes—"

"It's like Hermione on the boat to the castle and you don't even reply, it's so deliberate! ”

"Later in the sorting ceremony, you used Occlumency to trick the Sorting Hat into placing Harry Evans in the same Gryffindor House as his mother. Everything seems to be going well......"

"But once you're at Hogwarts, you're showing even more holes—"

"First of all, if it's really a person who is usually too timid to speak, why did the Sorting Hat send you to Gryffindor House?

"Secondly, an extremely introverted 'autistic child' who wanders around the castle every day, I can't remember how many times I bumped into you in the strange part of the castle in the weeks before school started...... There's no doubt that this is not normal, and if you are really that introverted, you shouldn't be huddled in a Gryffindor common room all day...... The personality and behavior do not match at all!"

"So at that time, I had a vague feeling that you might be looking for something on campus......

"Then came Potions class. Honestly, I'm not a believer in the theory of blood, but Harry Evans' mother, Lily Evans, was Horace Slughorn's protégé and a true genius in Potions class when she wasn't a dark wizard! Whoever your father is, their children would behave so badly in Potions class? Honestly, I don't believe it. ”

"And when you burned out several cauldrons in a row, it deepened my suspicions in this regard...... How can such a crucible burn out so easily? I have tried it myself a few times, but I can't do it to the same extent as yours...... And at the time, I had a bold assumption—"

"And the subsequent theft of Horace Slughorn's storage room confirmed my original hypothesis!"

"At that time, you had already stolen the medicinal materials from Slughorn's storage room, and began to quietly prepare a polyjuice potion, preparing to lurk at Hogwarts as Harry Evans for a long time. But the small pewter crucible used by our first-year students is not of high quality enough to withstand the preparation of this high-grade potion, and it will leave marks on the crucible after burning it for a few days......"

"As an experienced apothecary, Slughorn could easily find out something ......if he saw those marks on your crucible, combined with the theft of two precious herbs, the African tree snakeskin and the horn of the bicornus in his own storage room."

"So on the one hand, you let yourself behave extremely poorly in Potions class, and on the other hand, when there are marks on the crucible, you forcibly burn it completely...... In this way, even if the East Window incident happens, no one will suspect you. ”

"After all, who would have thought that Mr. Harry Evans, who was the worst performer in Potions class and who often burned the cauldron, would be able to make a polyjuice potion in private?"

After talking for a long time, Matthew slowed down a little before he continued to speak:

"There are so many of the above, it's not too big a loophole to pull it out...... But when it comes to Harry Evans alone, the loophole is too big. So as early as Halloween, on Halloween, when I saw you again where you shouldn't have been, and came up with a very clumsy excuse, I could be sure that you were the culprit in all this!"

"Yes......" Harry Evans blinked, his gaze full of charm and lust.

Matthew didn't look her in the eye and continued, "So, the several Hogwarts attacks are also well explained-"

"Neville once told me that Ronald Weasley had a big fight with you before the attack and made you cry, and I think he must have been with you at the time and found out the secret that you were actually a woman. ”

"And Crabbe and Goyle say that Weasley had left the prize room before the attack, and that before the attack, you, who were cleaning Headmaster Rozier's office with Neville and I, were ordered by Headmaster Rozier to send a stack of papers to Mr. Priger's office......"

"I'm afraid that I met you Weasley by chance in front of Mr. Pringer's office at that time, and I was worried that he would tell your secret, so I launched an attack on a whim!"

"As for Miss Adams and Mr. Caro, when they returned to the Slytherin common room from the Slug Club, they probably happened to meet you who were stealing medicinal herbs in the Potions classroom...... So you had to attack them. ”

"As for Justin Finchrie. Matthew smiled, "When Justine was in Hogsmeade, he was captured by a mysterious woman, asked about something, and then laundered of his memory...... That mysterious woman is probably Harry Evans' mother, Lily Evans!"

"As a wanted criminal, she was unable to contact Hogwarts, and after not hearing from you for a long time, she had to take the risk and infiltrate Hogsmeade. She's capturing first-year Hogwarts students at Hogsmeade, trying to hear from them about you and your safety...... If I hadn't been clever at that time, I would have almost been caught by her for questioning!"

But Lily Evans' Oblivion Charm was not very clever and wore off over time, and it seemed that Justin Finchrie was about to remember that day...... You fear that things will turn against you when Justin remembers his memories, but you take advantage of his confinement in the Forbidden Forest. ”

"Another interesting thing is that Neville Longbottom, who was locked up with Justin, came out unscathed. Judging from the attacks on Miss Adams and Mr. Caro, the killer didn't seem to care about attacking one or two people, but Justin was missing and Neville was intact......"

"There is only one reason I can think of, and that is that the attacker and Neville Longbottom are on good terms, and they are reluctant to attack him unless they have to......"

"Neville is indeed a 'friend' with a great personality, and if I were an attacker, I wouldn't want to hurt him!"

"Mr. Wakefield......" Harry Evans finally spoke, his voice sounding a little delicate, "You've said so much, but don't forget, the author of everything is a blood-sucking monster......"

"A blood-sucking monster?" Matthew looked indifferent:

"Perhaps, Hogwarts doesn't have blood-sucking monsters at all?"

"Or maybe we can all be blood-sucking monsters?"