It's just a Defense Against the Dark Arts professor.

Chapter 150 Professor, how could you.
Harry explained the origin of Sirius to them, and the whole Gryffindor students became interested in him.

Hermione looked up from her busy schedule, she looked at Sirius' hair and appearance, and guessed his breed.

"This is a husky, a large and ferocious dog, but it seems to be bigger than a normal husky."

Although Sirius was taken advantage of by the Gryffindor students, he enjoyed the time.

This made him even somewhat forget that two days ago, he was still living the life of being wanted and hunting down his enemies.

Harry took him around the lounge and finally sent him back to Sherlock's office.

It was getting dark, and as the Hogwarts curfew began, Sirius also returned to human form in Sherlock's office.

Sherlock was writing guessing papers for students in the seventh and fifth grades, and he asked without looking up.

"So what are you thinking now?"

Sirius' face became serious, and Sherlock's question made him return to the mentality of revenge again.

"Harry has many friends, just like James and I used to, so he can live well without me, but Peter—must die!"

Sherlock put down the quill in his hand, and he and Sirius looked at each other.

"Since you have made your own choice, I won't say anything more. The search for Peter can begin tonight."

Under the night, Sherlock, Lupine and Sirius left the castle together, and with them was Hermione's pet, the big ginger cat named Crookshanks.

On the outskirts of the Forbidden Forest, Sirius touched Crookshanks' head.

"This is the smartest cat I've ever seen. It should have the pedigree of Maolizi, and it remembers Peter's smell, so it can help us a lot."

Crookshanks' face is very big, and at first glance, it looks like his facial features have been squashed by something. It's not very beautiful, but it's ugly and cute.

Lupine and Sherlock are obviously people it considers trustworthy, and there is nothing against them.

After tidying up at the edge of the forbidden forest, the two of them, a dog and a cat, entered the forest again.

Finding a mouse in such a large forest is basically no different from finding a needle in a haystack. They mainly rely on Crookshanks and Sirius who turned into a dog to search for Peter's scent.

After nearly a night of searching, they were not in vain.

Crookshanks keenly sensed Peter's scent under a tree, where Sherlock and the others found a few gray mouse hairs.

This is enough to prove that Peter is hiding in this forbidden forest now, and Sherlock and the others are looking in the right direction.

But Sherlock and Lupine still have classes during the day, so they can't accompany Sirius to search every night. The most important main force in searching for Peter is a dog and a cat.

In order to get the news in time, Sherlock specially summoned his patron saint to accompany Sirius.

If anything was found, Sirius could have his Patronus cancel it himself, and Sherlock would get the message.

Final exams are getting closer.

Gryffindor vs. Slytherin, the last Quidditch match of the year to determine the title of the champion, also started.

Both Sirius and Lupine watched the game. They witnessed Harry lead the team to win the Quidditch House Cup, which Gryffindor hadn't won in eight years.

Sherlock didn't have time to watch the game because of a letter sent to him by Silke who was far away in Germany at this time.

It said that regarding the deciphering of Fiddlesticks' memory, the Department of Mysteries of the German Ministry of Magic already had some clues, and asked him to wait for a few more days, and when the results came out, she would return to Hogwarts.

The locket has been worn on Sherlock's neck for half a year. During this period, the old locket that was thrown on the ground and no one would pick it up has become more and more new. Now it is completely invisible. It's an ancient thing, and anyone who says it's pure new just bought it from any magic shop will believe it.

And when putting the locket to his ear, Sherlock could vaguely hear a strange sound coming from it.

The sound is very slight, but very rhythmic, "da da da", like the hands of a clock turning.

Every night he carried the locket, he would try to get it off his neck, but it was never successful.

Now he can only wait for Silk's news, and see if he will get any useful discoveries from the straw man in the end.

After Gryffindor won this year's Quidditch House Cup, the exam week at Hogwarts also began.

Since the seventh and fifth grade students are going to take the Wizarding Level Examination held by the Ministry of Magic, Sherlock's task at the end of this year is much easier, as long as he is responsible for giving the sixth grade students the exam questions.

The students he taught were very nervous. After all, this could be said to be the most important exam in their lives.

Sherlock is very confident in them, because in the last two mock tests near the end of the term, the grades of this year's fifth grade students are unexpectedly very good, and the overall looks are much better than the previous one.

Even George and Fred, two troublemakers who usually don't pay much attention to their studies, have performed very well in the mock exams, which completely broke Sherlock's judgment of them at the beginning of this semester.

Just after the sixth-grade student exam that Sherlock had to be responsible for, Sirius, who had been looking for Peter in the Forbidden Forest, finally made an important discovery.

Lupine was still proctoring the exam, so only Sherlock and Sirius connected and learned about the situation from him.

"Peter usually only hides in the Forbidden Forest for a week. After a week, he will run out and sneak into Hagrid's cabin to steal something to eat. He has a sweet tooth, since he was in school, so even in the Forbidden Forest Hiding in the forest, he can't bear the feeling of not being able to eat sweets."

There was a twinkle in Sirius' eyes as he continued.

"Yesterday, Crookshanks discovered that Peter escaped from Hagrid's hut. The time for him to steal food is basically fixed, which means that on today next week, we can try to catch him!"

Sherlock thought for a moment and said.

"When the exam week ends this week, the students will wait another week in the castle for their results. After the results come out, this year's vacation will begin. At that time, what is Peter's plan? Will he continue to stay in the Forbidden Forest? It’s still two, so the time you mentioned next week may very well be our last chance.”

Sirius obviously understood this too, and his face became gloomy.

"From today onwards, I will keep watch near Hagrid's hut, until when Peter shows up!"

Sherlock nodded, let his patron saint continue to follow Sirius, and returned to the castle.

Two days later, on the evening of the day when Harry's third-year students took their divination exams, Sherlock stayed in his office with Lupine.

They opened the Marauder's Map and observed the situation around Hagrid's hut while chatting.

"Is it time for you to transform again?" Sherlock asked looking at Lupine's face.

Lupine's face was pale. Every time around the full moon night, his physical condition would become very bad, and his spellcasting state would also become very poor.

Hearing Sherlock's words, Lupine nodded slightly.

"Should be tonight, Snape hasn't brought me the potion yet."

"He has a lot of resentment towards you, just because you bullied him when you were in school?"

Lupine seemed to have thought of something with a bitter smile on his face.

"There should be part of Harry's mother's problem."

"Ok?"

Sherlock's eyes suddenly lit up with a light called gossip.

"Something about Harry's mother?"

"Yes, Snape and Lily have known each other since childhood, but Lily chose to combine with James, who was the worst Snape dealt with when they were students. It made him extremely resentful. He hated James and us, and possibly also Pass Lily."

"And that's why he treats Harry like that?"

"Snape did pass on his hatred of James to Harry." Lu Jing said calmly, "But in the end, he should still cherish Lily, and this emotion may have extended to Harry as well. So he hates Harry, but he doesn't want to put him in any danger."

Sherlock clicked his tongue.

"It's really complicated feelings."

At this moment, Lupine suddenly frowned, and his ears moved sharply.

"Did you hear any strange noises?"

Sherlock looked puzzled.

"No, I didn't hear anything."

Lupine stood up, looking for the source of the sound.

"It's like a clock, ticking, ticking."

Before he finished speaking, Sherlock's face suddenly froze.

"Sirius has canceled my Patronus Charm!"

Lupine, who was listening carefully to the source of the sound, was also stunned. The two of them looked at the Marauder's Map on the desk in the direction of Hagrid's cabin. Among the names of Hagrid, Harry, Ron and Hermione, there was There is a prominent name - Pettigrew Peter!

After that, Sherlock and Lupine didn't have time to worry about the source of the strange voice, and they walked out of the office together and headed for Hagrid's cabin.

Meanwhile, in Hagrid's cabin.

Today is Buckbeak's execution period, Harry and the others immediately put on their invisibility cloaks and came here to comfort Hagrid after finishing their divination exams.

But everyone's in a low mood, because they all know that Buckbeak isn't some bad magical animal, and that the crime the Ministry has imposed on him is nothing but a slander.

Hermione was crying silently, and when she was about to pour the milk into the milk jug, a mouse suddenly fell out of the jug!

Ron looked at the mouse and shouted with a dazed expression.

"Babber! What are you doing here?"

He grabbed the screaming and struggling mouse, and Hagrid drove them out of the door with a serious face at this time.

"Let's go, let's go! I don't want you to see the execution, not to mention that if other people find that you have left the castle without permission, you will definitely be punished."

Harry and the others were pushed out of the hut by Hagrid. They put on the invisibility cloak and walked towards the castle in the dark.

Banban, who was put in Ron's pocket, kept struggling, as if he had been frightened by something, desperately trying to get out of Ron's pocket!

Finally, when Ron was not paying attention, Banban finally succeeded!
He slipped out of Ron's fingers, and when he was about to flee into the Forbidden Forest along the night, a big ginger cat flew past like lightning, and caught Scabbers in his mouth inside.

Harry and the others saw this scene, and Ron ran out from under the invisibility cloak in a panic, and chased in the direction where Crookshanks was escaping.

"You bloody stinky cat!"

"Ron!" Hermione yelled sadly, and she and Harry glanced at each other, then also ran away.

Crookshanks was running in a very clear direction, which was in the Forbidden Forest.

Harry and Hermione followed Ron and soon heard the sound of Ron grabbing Crookshanks.

"Smelly cat! Let it go!"

Ron snatched Scabbers back from Crookshanks' mouth, just as he rejoined Harry and the others, preparing to hide in the invisibility cloak and return to the castle.

A huge dog blocked their way with its sinister gaze.

He had been wearing Sherlock's disguise even when searching the Forbidden Forest, so Harry clearly recognized Sirius.

"It's Professor Forrester's dog!"

"Get out of the way, good dog, get out of the way!" Hermione pleaded to Sirius.

But Sirius still had no intention of leaving at all, and his eyes were completely devoid of the kindness that Harry brought him to the Gryffindor lounge at the time, but with extremely fierce eyes.

Harry had already drawn out his wand at this moment, but before he could do anything, two distinct footsteps came towards them.

With the help of a little light in the darkness, after seeing the person coming clearly, Harry and the others suddenly showed joyful expressions.

"Professor Forrest (Lupine)!"

The two people who came over were exactly Sherlock and Lupine.

However, the next scene left Harry and the others completely stunned.

Neither Lupine nor Sherlock paid attention to their shouts, but drew out their wands at them with serious faces.

At this time, Sirius also lifted his Animagus transformation, holding a magic wand temporarily lent to him by Sherlock in his hand, aiming at Harry, more precisely, at Ron's hand mouse.

Harry stared blankly at the face of Sirius, then at Lupine and Sherlock, the disbelief in his eyes seemed to overflow from his eye sockets.

"Professor, how could you?"

(End of this chapter)