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Jack Harkness - Wikipedia
"Jack Harkness" | Tardis | Fandom
Jack Harkness (Captain Jack Harkness) | Tardis | Fandom
John Barrowman - Wikipedia
Captain Jack Harkness | Doctor Who - YouTube
"Torchwood" Captain Jack Harkness (TV Episode 2007) - IMDb
Captain Jack Harkness: a complete Doctor Who history - Radio Times
Captain Jack Harkness | Explore - Doctor Who
Doctor Who (2005–2022), Series 1 - Captain Jack Harkness - BBC
Doctor Who: Things You Didn’t Know About Captain Jack Harkness