a Maya Vision production in association with the BBC and PBS ; written and presented by Michael Wood ; directed by David Wallace ; produced by Rebecca Dobbs
Nelvana Limited ; PBS ; Scholastic Productions ; Studio 306 ; The Film House Group ; producer, Hasmi Giakoumis ; writers, Joanna Cole, John May, Jocelyn Stevenson ; director, Charles E. Bastien
an American Mystery! special, a production of Wildwood Enterprises and Granada Entertainment in association with WGBH Boston for the Public Broadcasting Service, the Corporation for Public Broadcasting, and Carlton International ; producer, Craig McNeil ; screenplay writer, James Redford ; director, Chris Eyre
a Hartswood Films production for BBC Wales in co-production with Masterpiece ; co-created by Mark Gatiss & Steven Moffat ; written by Mark Gatiss, Steven Moffat and Steve Thompson ; series producer Sue Vertue ; executive producers Beryl Vertue, Steven Moffat, Mark Gatiss, Bethan Jones ; directed by Jeremy Lovering, Colm McCarthy, Nick Hurran