Chapter 11 Knocking at The Door at Midnight(III)(5)

 “It’s quite possible.” Master said, I thought it was Master’s instinct again, but Master continued to say, “Think about it, before and after the case, we watched the surveillance for so long. If there were any suspicious situation, we should find, but we didn’t find anything. Let’s imagine that if the murderer had been in the neighborhood, near the security room where the surveillance could not be found, it might not have appeared in the surveillance, right?”