Jack B. Du Brul

"Sinking thousands of feet below the surface of the earth in the Leister Deep copper mine in Minnesota, Philip Mercer rides a series of heavy-duty elevators to visit his old friend and mentor, Abraham Jacobs. Jacobs has led a research team to the deepest section of the mine for a groundbreaking study into climate change and cosmic rays. But as Mercer approaches the bottom, he is stunned to hear the unmistakable report of automatic gunfire in the massive...