"Be careful." Jaewook reminded everyone.

"It's this one." Jaesuk and Jaewook pointed to the panel beside the open one on the left of the stage.

"How does it work? Can someone get through it?" Sehun asked.

"Does it open from underneath?" Jaewook questioned as well.

"Do we need to take it out?" Kwangsoo wondered.

"It can be accessed from here." Jaewook pointed at the open tunnel.

"The one next to it? That doesn't make sense." Kwangsoo told him.

"It's blocked." Jongmin peeked at the hole.

"Yes, it's blocked." Jaesuk bent down and tapped on the side to confirm. Sehun climbed into the hole.

"Do you see one?" Jaesuk asked him.

"No, hyung." Sehun replied. Jaesuk went towards the back of the stage and entered from there.

"Sehun-ah, are you sure?" He asked as he crawled in.

"Yes." They were both knocking along the side of the tunnel now.

"You need to click the switch." Kwangsoo suggested.

"What?" Sehun asked.

"Click the switch. Like this..." Kwangsoo bent down the hole to demonstrate something but accidentally hit Minyoung in the head with one of the cameras on his backpack.

"Gosh, I'm sorry. Are you okay?" He immediately apologized to her.

"Get out of her way." Jaewook scolded him.

"I'm really sorry. Please keep talking." Kwangsoo told Minyoung.

"No wonder we keep scolding you." Jaewook continued to say.

"I'm sorry." Kwangsoo apologized again.

"I'm good." Minyoung told him.

"Hold on." Jaesuk came back up the stage.

"Is it not there?" Jaewook asked.

"There's no entrance at the sides." Jaesuk replied.

"If we look according to the plan, if we close this...this has to be it." Minyoung supplied. While they were discussing that, Sunmi took the time to study Hyejeong, who had been hovering over them since they started investigating the stage. She watched as the woman's eyes kept gravitating to a certain spot near where they were gathered.

"This..." Kwangsoo started saying.

"What is it?" Jongmin asked.

"Ours is from the 16th while this is from the 23rd." Kwangsoo informed them.

"It was added later on." Jongmin supplied.

"Yes, it was added on the floor plan of the 23rd." Kwangsoo stated.

"Another floor plan was drawn right before the show." Jaewook added the facts together.

"That's right." Kwangsoo nodded. They decided to ask Hyejeong about it.

"Floor plans change often when putting together a show." She told them.

"Really?"Jongmin asked her.

"Yes." Hyejeong confirmed.

"Could it be forced open?" Sehun asked out loud.

"You better not be lying." Kwangsoo told her.

"I believe you but still..." Jongmin told her. Sunmi used that opportunity to approach Jaesuk.

"Oppa, Hyejeong, keeps hovering over us. I was observing her earlier and her eyes would gravitate somewhere near us, like she's making sure we didn't find anything." Sunmi whispered to him. Jaesuk looked at Hyejeong who was staring at the glass platform. Jaesuk and Sunmi approached the platform and Hyejeong hurriedly diverted her eyes.

"Wait. She looked at something just now. What were you looking at just now? She looked at something. What did you look at?" Jaesuk questioned her.

"The rehearsal should start soon." Hyejeong told him.

"But--" Jaesuk started saying but Hyejeong cut him off.

"There's not much time left."

"She just looked at something." Jaesuk muttered.

"During the show, how many traps are supposed to be open?" Jaewook asked Hyejeong.

"She looked at something." Jaesuk told Sunmi who nodded, now staring at the glass platform. She remembered what happened earlier with the case when Jaewook thought the magnets were for support. She approached the platform to test out her theory.

"That entrance should be open." Hyejeong said when Sunmi felt it.

"Oppa." She called Jaesuk over to confirm.

"Oppa, it's her. The one on the left is a button." Sunmi told him and he bent down to check.

"Wait a second. Hold on." Jaesuk said as he felt what Sunmi was talking about.

"What is it?" Jaewook asked him.

"She was near the platform earlier, right?" Jaesuk asked.

"She was on the platform." Sunmi answered.

"Can it be pressed? It can be!" Jongmin said as he watched Jaesuk's fingers fiddling with the circles on the platform.

"I can press it." Jaesuk confirmed as he looked at Sunmi.

"Is it a button?" Jaewook asked.

"Just press it." Kwangsoo told him and Jaesuk did as he asked, the second hidden panel dropped down. Everyone was surprised. Kwangsoo looked down the hole and screamed in shock.

"There's someone here!" He said.

"What?" Sunmi asked as she approached the hole.

"Who is it?" Jaewook checked as well.

"It's Charming." Kwangsoo cried out,

"Charming?" The other detectives peaked in.

"Yes, him!" Kwangsoo confirmed.

"Charming-oppa!" Sunmi called out but he didn't move.

"There's blood." Sunmi said as she made a move to go down the hole but Sehun stopped her.

"Don't let her leave. Get her." Minyoung pointed at Hyejeong.

"Hold on a second." Jaesuk and Jongmin approached Hyejeong to make sure she didn't escape.

"Oppa, please. I just wanna check if he's still alive." Sunmi told Sehun who looked at her before nodding and letting her go. She bent down and was about to slide into the hole when arrows suddenly shot out of nowhere. Luckily, Sejeong was able to pull Sunmi back before she could fall in from shock. Everyone was in disarray.

"What was that?"

"Are you kidding me?"

"Did you see that?"

"What the hell are those?" Jaewook asked everyone.

"Don't let her leave." Kwangsoo pointed at Hyejeong.

"Ms. Hyejeong, wait." Jaesuk grabbed her.

"What happened?" Jongmin asked.

"He bled out." Sunmi informed everyone.

"But..."

"Jeez."

"I just got goosebumps." Sehun said as he pulled Sunmi closer to him, it seemed like the girl was in a state of shock.

"Hold on. What's with the arrows?" Jaesuk asked.

"That's what he was stabbed with." Sejeong supplied.

"That's why the marking stickers were moved." Minyoung told the group and they nodded in realization.

"So in addition to the original trap door, another one was made." Jaewook started narrating the events that transpired.

"When this opened, he dropped down and then he was stabbed." Jaewook finished.