The Drug Factory

"Batman, how did you catch Alberto?" After learning that Alberto had been arrested, Lieutenant Harvey Bullock asked Commissioner Gordon to help him find Batman and clear up his confusion. "Gotham City is huge. I searched for ages and never found a trace of him."

Gotham was a big city, covering 846.9 square kilometers, with a population of over three million. It was about one hundredth the size of Tongliao, with roughly the same population. Finding someone here was like looking for a needle in a haystack.

"I knew he'd strike today, so I prepared in advance," Batman said. "But there was more than one potential victim. I couldn't stop him beforehand, but once he'd killed someone, I could follow the trail he left behind."

"So that's how it happened." Harvey Bullock nodded. "But how did you know Alberto was the Holiday Killer? I figured he'd faked his death, but I wasn't sure he was the killer."

"It was also on the day of Alberto's 'funeral.' We all went into his study to look for evidence. Remember?" Batman asked.

"Of course. Father Roland noticed the kid's browser history had been wiped clean. That's what convinced me he wasn't dead." Harvey Bullock nodded.

"I found some metal shavings in his study that day. I took them back for analysis, and they turned out to be an alloy used in gun frames," Batman explained. "That was when I realized Alberto was the Holiday Killer—or at least one of them."

"You mean there might be more than one Holiday Killer?" Harvey Bullock asked.

"It's possible. I discovered that the person who helped Alberto fake his death and go into hiding wasn't Falcone. Even Falcone was kept in the dark. So there may be an organization behind him."

"That makes things even more complicated. Let's