Their best method was to trace back the landlady's movement. She has a total of 4 pills in her hand and they didn't even know why she had so much.
Thanks to that, they have enough to analyze the components.
So far, they have broken down one of them while the other two were contaminated by some unknown liquid, so only 1 pill remained.
They needed to do targeted testing if they wanted to break down the pill.
"Damn, this is difficult. She met with many people." Miwako was helping Megumi Aiko to look through the surveillance cameras and the two of them were forced to work overtime. At this time, Megumi Aiko looked like she was about to die, though.
"Aiko, come on…"
"Ugh…" Megumi Aiko looked like she was about to die after working overtime. Conan was already sent back to sleep first because they couldn't possibly let a child watch the surveillance camera with them all night long.
And this was already morning.
Megumi Aiko took a few naps in between because she was simply too tired.
"These are the surveillance cameras from two days ago," Miwako said while yawning. They traced the landlady movements backwards starting from one day ago, two days ago, and so on. Even though they have fast forwarded the video, they still found that she met with many people.
They had to pause and check each of them one by one to confirm their identity, which made their work progress so slow.
Most of them were her tenants, though, and so far, there were no suspicious people.
Or rather… They had checked one by one and there was no one whom they were suspicious of. The interaction seemed normal and no one gave the pills to the landlady.
Perhaps it was done outside the surveillance camera's range?
If that was the case then the case will be closed down.
Megumi Aiko could imagine how devastated Conan would be. The clue was placed right in front of him, but they couldn't get the answer.
It was lunch time when Megumi Aiko finally saw a familiar face.
'That's the scarred man from that night.'
The man met with the landlady and the two of them walked towards the area without surveillance cameras. There didn't seem to be anything suspicious, but Megumi Aiko was determined to find something, so she stared at the screen hard.
In this way, when Kami Shita paid a visit, she saw Megumi Aiko staring hard at the screen. "Pfft, do you want to kill the screen, Aiko?"
"Shita." Megumi Aiko looked at the other party helplessly and then showed the video to the other party. "I'm trying to figure out why the two of them have to walk to the areas without surveillance cameras and suddenly turn around. Don't you think it's suspicious?"
Kami Shita looked at Megumi Aiko who had black circles under her eyes and patted the other party's shoulder. "You have worked hard, Senior Aiko."
Megumi Aiko: "..."