Doctor Who: 24 Carat [1231452] Released: 2021-01-21 Revenue: $0 Budget: $0 Profit: $0 Runtime: 9 mins Popularity: 0.2177 Vote Average: 6 Vote Count: 1 Overview: Several investors visit Melanie Bush to propose business ventures, and a mysterious old friend returns.... Cast [7] Bonnie LangfordMelanie Bush Sylvester McCoyThe Doctor Mark HallileyNarrator Catherine CusackDrinking Fountai Edward PeelVisitor from the Richard GauntlettDerek the Tetrap Derek HandleyDerek the Tetrap Trailers A Business Proposal for Mel! | The Collection: Season 24 Announcement Trailer | Doctor Who