To finally uncover why exactly the lights went out that fateful summer night in Baltimore, Sam and Mac search deeper, down in the basement of Oriole Park at Camden Yards. There, the ballpark’s head electrician gives them a tour of the elaborate system that keeps the lights on—and turns them off. Feeling as much like invaders as investigators, Sam and Mac learn who had access to the lighting controls back in 1997, and they stumble upon a key detail in the case.

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