Captain Jack cannot die. He was once a Time Agent who was born on the Boeshane Peninsula. He wears a vortex manipulator and Dorium Maldovar sold River a manipulator "fresh off the wrist of a handsome Time Agent." Dorium works with the Headless Monks, who decapitate people. This explains how Captain Jack no longer has a body. He is the Face of Boe. Bbc Torchwood, Blue Boxes, The Face, Johnbarrowman, 50Th Anniversaries, Doctors Who, Captain Jack Harkness, Jack O'Connel, John Barrowman
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Yes, a million times yes.