Barrowman was the first Torchwood cast member to reprise his role and has appeared in numerous releases, including semi-regular appearances in the monthly range, an ongoing series set after the events of Miracle Day and various special releases. Captain Jack was set to appear in Absent Friends - marking the fiftieth Torchwood monthly range release - which would have seen him reunited with the Tenth Doctor (David Tennant). However, while this story was recorded, its release was cancelled in May 2021. In 2017, Big Finish Productions released a solo audio series for the character - The Lives of Captain Jack - containing four plays depicting adventures in Jack's life. Including the year he spent on a devastated Earth following The Parting of the Ways; his romantic encounter with Alonso Frame, briefly alluded to in The End of Time; a friendship he developed with Jackie Tyler (Camille Coduri) during the time he waited on Earth for the Doctor to return; and a story from his days as a Time Agent before he adopted the name Jack Harkness, revealing how he lost two years of memory along with his real name: Javic Piotr Thane. A second volume of The Lives of Captain Jack was released in 2019 which saw Jack filling in for a recuperating Sixth Doctor (Colin Baker) and working as a chauffeur for newsreader Trinity Wells (Lachele Carl). In 2020, following Jack's return to television in Fugitive of the Judoon but recorded prior to broadcast, a third volume reunited him with Jackie, depicted an ageing Jack in the distant future and explored his encounters - and romance - with River Song (Alex Kingston). Characterisation Concept and creation In naming the character, executive producer and head writer Russell T Davies drew inspiration from the Marvel Comics character Agatha Harkness, a character whose surname Davies had previously used in naming lead characters in Century Falls and The Grand. Davies states that reusing names (such as Tyler, Smith, Harper, Harkness and Jones) allows him to get a grip of the character on the blank page. Jack's original appearances in Doctor Who were conceived with the intention of forming a character arc in which Jack is transformed from a coward to a hero, and John Barrowman consciously minded this in his portrayal of the character. Following on that arc, the character's debut episode would leave his morality as ambiguous, publicity materials asking, "Is he