Transmat:Torchwood
From Tardis Wiki, the free Doctor Who reference
Captain Jack Harkness was the twelfth episode in the first series of Torchwood. By returning Jack Harkness to The Blitz during World War II, it allowed for a story that explored the origins of the "Jack Harkness" alias. However, in so doing, it left Jack's teammates with even less understanding of who he really was.
Harkness introduced the character of Bilis Manger, someone who would play an important role in the series 1 finalé, but who remained a mystery that was never fully unpacked.
