A Black Hole Mystery Wrapped in a Firewall Paradox. Overbye, Dennis, Black Holes (Space), Gravitation and Gravity, Einstein, Albert, Hawking, Stephen W, Rosen, Nathan, Susskind, Leonard, Maldacena, Juan, Bousso, Raphael, Almheiri, Ahmed, Marolf, Donald, Sully, James, Polchinski, Joseph, Physics, Space and Astronomy