“Deeply and deceptively interesting,” is how New York Times Magazine described Sen. Harry Reid in January of 2010. Deceptive indeed. Five years later, Reid’s cache of secrets in the Senate chamber puts Harry Potter’s wizardry to shame. Two chambers—House and Senate—comprise the U.S. legislature. Our bicameral structure helps keep raw political power in check. Yet without term limits, a bicameral legislature is not enough to restrain the ambition of politicians like 75-year-old Reid who have held public office for decades. Grab your candle and follow me as I guide you through the backmost rooms of the Senate chamber, where Reid...