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... h virtually no background in chemical education, and they never stepped into the lab. These three were the most suspicious.
Batman originally thought that the electrician who arrived late was the most suspicious. However, the police presented the results of their inquiries: the school auditorium had lost power at the time, and there were reportedly hundreds of alibi witnesses. The electrician's suspicion was ruled out as well.
That left the psychology professor and the physical e ...
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