in a neighbouring studio, and when he discovered what was being recorded next door convinced the director to give him a small role. This personal enthusiasm for the series had also been expressed by his participation in several audio plays based on the Doctor Who television series which had been produced by Big Finish Productions, although he did not play the Doctor in any of these productions. His first such role was in the Seventh Doctor audio Colditz, where he played a Nazi lieutenant guard at Colditz Castle. In 2004 Tennant played a lead role in the Big Finish audio play series Dalek Empire III as Galanar, a young man who is given an assignment to discover the secrets of the Daleks. In 2005, he starred in UNIT: The Wasting for Big Finish, recreating his role of Brimmicombe-Wood from a Doctor Who Unbound play, Sympathy for the Devil. In both audio productions, he worked alongside Nicholas Courtney, who reprised the character of Sir Alastair Gordon Lethbridge-Stewart. He also played an unnamed Time Lord in another Doctor Who Unbound play Exile. UNIT: The Wasting, was recorded between Tennant getting the role of the Doctor and it being announced. He played the title role in Big Finish's adaptation of Bryan Talbot's The Adventures of Luther Arkwright (2005). In 2006, he recorded abridged audio books of The Stone Rose by Jacqueline Rayner, The Feast of the Drowned by Stephen Cole and The Resurrection Casket by Justin Richards, for BBC Worldwide. He made his directorial debut on the Doctor Who Confidential episode that accompanies Steven Moffat's episode "Blink", entitled "Do You Remember The First Time?", which aired on 9 June 2007. In 2007, Tennant's Tenth Doctor appeared with Peter Davison's Fifth Doctor in a Doctor Who special for Children in Need, written by Steven Moffat and entitled "Time Crash". He later performed alongside Davison's daughter, Georgia Moffett (as "Jenny") in the 2008 episode "The Doctor's Daughter". Georgia Moffett later became David Tennant's wife. Tennant featured as the Doctor in an animated version of Doctor Who for Totally Doctor Who, The Infinite Quest, which aired on CBBC. He also starred as the Doctor in another animated six-part Doctor Who series, Dreamland. Tennant guest starred as the Doctor in a two-part story in Doctor Who spin-off The Sarah Jane Adventures, broadcast in October 2009. He continued to play the Tenth Doctor into the revived programme's fourth