"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...

"In the summer of 1914, Detective Isaac Bell is asked to investigate a cache of missing rifles but discovers something much more sinister. Whoever broke into this Winchester factory wasn't looking to take weapons; they wanted to leave a radio transmitter, set to summon a fleet of dreaded German U-boats. Someone is trying to keep American supplies from reaching British shores. Bell must hunt down a new piece of technology that is allowing the Germans...