Regarding the closed room method, Shibahara had no idea. No traces of such a mechanism were found on the body of the deceased or at the scene. Therefore, he decided to give up the closed room as a breakthrough point and instead use the alibi as an entry point to lock in the suspect. But now even this path is becoming more and more difficult.
In fact, Shibahara also considered the secret room method proposed by Olivia Guan. The distance from the sofa to the door is at least three meters. Shibahara squatted outside the door to collect the wires, and it took at least ten seconds. It was too risky to set up a secret room at a time when people were coming and going. Psychologically, the murderer would not take the risk.
"That's why we need to investigate."
"The more you talk, the more it seems like suicide." Olivia Guan began to lose heart.
"In fact, I was hoping to find some useful clues from you."
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