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
created by Anthony Horowitz ; written by Anthony Horowitz and David Kane ; produced by Jeremy Gwilt ; directed by Stuart Orme and Andy Hay ; Eleventh Hour Films in association with Acorn Media Group, Inc. and Octagon Films Limited
PBS ; a co-production of ITV Studios/Masterpiece ; produced by Chris Burt ; directors, David Drury, Matthew Evans, Nick Laughland ; writers, Nick Hicks-Beach, Helen Jenkins, Chris Murray
producer, Guy de Glanville ; director, Andy Wilson ; created and written by Chris Lang ; produced by Mainstreet Pictures for ITV ; co-produced with Masterpiece
an ITV Studios and WGBH Boston co-production ; produced by Chris Burt ; directors, Nick Renton, Nick Lughland, and David Drury ; writers, Helen Jenkins, Noel Farragher, and Nick Hicks-Beach
a co-production of Mammoth Screen and Masterpiece in association with ITV Studios ; written and devised by Russell Lewis ; produced by James Levison ; directed by Shaun Evans, Zam Salim, Kate Saxon ; executive producers, Russell Lewis, Damien Timmer and Helen Ziegler ; executive producer for Masterpiece, Rebecca Eaton
a co-production of Mammoth Screen and Masterpiece in assocation with ITV Studios ; directed by Shaun Evans, Ian Aryeh, Kate Saxon ; produced by James Levison, Charlotte Webber ; written and devised by Russell Lewis