a Playground production for BBC and StarzOriginals in association with City Entertainment and Kippster Entertainment ; produced by Laura Hastings-Smith ; written for television by Kenneth Lonergan ; directed by Hettie MacDonald
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
a Playground Entertainment and Company Pictures production for BBC and Masterpiece in association with BBC Worldwide, Altus Media, and Prescience ; produced by Mark Pybus ; adapted for television by Peter Straughan ; directed by Peter Kosminsky