Leaving the Old Castle!

Professor Agasa walked over, intending to make a call, when he suddenly saw something being thrown out ahead of him.

"What's that?" Professor Agasa walked over curiously and picked up a white cap stained with blood.

"Ah, this is Conan's cap." Professor Agasa was startled. Then, spotting an open hidden door nearby, he headed inside.

Just after Professor Agasa entered, a shadow behind him swung a club at him, striking the back of his head and nearly killing him.

Professor Agasa did not struggle in the slightest and passed out immediately.

Poor Professor Agasa had been knocked unconscious as well.

"Ayumi, Haibara, this is bad! Professor Agasa is missing!" Late at night, Genta and Mitsuhiko shouted.

"Professor Agasa is missing? Could he have been taken care of too?" Chen sat up and said.

"How could he be missing? Did he go looking for Conan?" Ayumi looked at the two of them in confusion.

"We don't know. The Professor never came back to his room."

"In that case, I'll take you to look for him." Chen said to them.

"Ah, Brother Chen, do you know where Professor Agasa is?"

"Of course. Follow me." Chen smiled faintly and led them to the room they had visited that afternoon—the room where Conan had disappeared.

"There's actually a hidden door here. If we go through it, we can enter the secret passage."

"Then how do we get in?" Ayumi asked.

"It's simple, we just need to—"

Boom!

Chen kicked the hidden door apart in one blow, cutting Ai Haibara off mid-sentence. She clearly knew how to open the hidden door and had been about to explain it, but Chen had simply blasted it open with a violent kick.

"You're way too violent." Ai Haibara said speechlessly.

"Violence is the simplest way to solve problems."