to disintegrate. The Doctor then captures and deactivates Mr Sin. Production A Robert Banks Stewart story outline called The Foe from the Future inspired elements of this serial. The Foe from the Future was adapted by Big Finish Productions as an audio play in 2012. Working titles for this story included The Talons of Greel. This was the final Doctor Who story produced by Philip Hinchcliffe. His successor, Graham Williams, sat in on this story's production. This story featured John Nathan-Turner's first work as an uncredited production unit manager on the series, with the credit going to Chris D'Oyly-John. Nathan-Turner would become the series' regular production unit manager under Williams and succeed Williams as the show's producer from 1980 to 1989. The Talons of Weng-Chiang featured two separate blocks of location shooting. As planned, the serial was to have a week of location filming for the exterior footage, which took place at various locations in London, with the majority in the area around Wapping, in mid-December 1976, followed by three studio recording sessions. Producer Philip Hinchcliffe was able to negotiate the swapping of one of the planned studio sessions for the use of an outside broadcast video crew, which led to the second block of location shooting in early January 1977, encompassing a week in Northampton, the majority of which was spent at the Royal Theatre. A large pile of straw seen in one scene was placed there to cover a modern car that had not been moved off the street. The production team briefly considered giving Jago and Litefoot their own spin-off series. The production of this serial featured in a BBC 2 documentary, Whose Doctor Who (1977), presented by Melvyn Bragg, which was part of the arts series The Lively Arts. Including interviews with Tom Baker, Philip Hinchcliffe and fans of the series, it was the first in-depth documentary made by the BBC on the series and was transmitted on the day following the final episode. The programme is included as an extra on the DVD releases of The Talons of Weng-Chiang. Cast notes Deep Roy, who played Mr. Sin, had an uncredited role as an unnamed alien trade delegate in The Trial of a Time Lord: Mindwarp (1986). Dudley Simpson—who composed much of the music for Doctor Who in the 1960s and 1970s—has a cameo as the conductor of Jago's theatre orchestra. Michael Spice appears in this