"Indeed, we all saw it, saw the back of the person, unable to confirm that it wasn't Old A, and also unable to confirm that it was Old A. So let's reason the other way around — if there's only us in this house, and someone dies between the power outage and the room allocation, who do you think it is?"
B's gaze quickly moved, "Your assumption doesn't hold. Old A in the circuit room is present, Officer Chen and C are both in the powerhouse, EFG are together and never separated, my husband is with you, and I alone went to the circuit room. We all had a place to go, how could anyone be killed - Unless someone else is killed, an original inhabitant of this house, or someone else who came in addition to us."
