Samira Ahmed, Peter Capaldi, Steven Moffat, Brian Minchin, and Pearl Mackie at an event for Doctor Who (2005)

Amanda Abbington, Rebecca Eaton, Steven Moffat, and Sue Vertue at an event for The 68th Primetime Emmy Awards (2016)

Steven Moffat at an event for The 68th Primetime Emmy Awards (2016)

Rebecca Eaton, Steven Moffat, and Sue Vertue at an event for The 68th Primetime Emmy Awards (2016)

Steven Moffat at an event for Sherlock (2010)

Rupert Graves, Steven Moffat, and Sue Vertue at an event for Sherlock (2010)

Steven Moffat at an event for The 66th Primetime Emmy Awards (2014)

Allison Janney and Steven Moffat at an event for The 66th Primetime Emmy Awards (2014)

Steven Moffat at an event for Doctor Who (2005)

Actor Mark Gatiss, actor David Bradley, actor Matt Smith, actress Jenna Coleman, producer Marcus Wilson, and writer Steven Moffat speak onstage at BBC America's "Doctor Who" 50th Anniversary panel during Comic-Con International 2013 at San Diego Convention Center on July 21, 2013 in San Diego, California.

Steven Moffat and Sue Vertue in Sherlock (2010)

Steven Moffat in Doctor Who: The Doctors Revisited (2013)

Peter Capaldi, Chris Hardwick, and Steven Moffat at an event for Doctor Who (2005)

Peter Capaldi and Steven Moffat at an event for Doctor Who (2005)

Peter Capaldi, Mark Gatiss, Michelle Gomez, Matt Lucas, Steven Moffat, and Pearl Mackie at an event for Doctor Who (2005)

Peter Capaldi, Steven Moffat, and Pearl Mackie at an event for Doctor Who (2005)

Arielle Kebbel, Steven Moffat, and François Arnaud

Kevin Smith, Peter Capaldi, and Steven Moffat

Mark Gatiss, Steven Moffat, and Sue Vertue at an event for Sherlock (2010)

Steven Moffat and Sue Vertue at an event for Sherlock (2010)

Steven Moffat, Matt Smith, Karen Gillan, and Arthur Darvill at an event for Doctor Who (2005)

Steven Moffat, Caroline Skinner, Matt Smith, Karen Gillan, and Arthur Darvill at an event for Doctor Who (2005)

Steven Moffat, Benedict Cumberbatch, and Matt Smith