Series Four Episode Guide
- 4.1: Adrift in Red - 25th December 2013 (Part One)
- 4.2: Adrift in Red - 31st December 2013 (Part Two)
- 4.3: Who's On Baker Street - 29th March 2014 (Part One)
- 4.4: Who's On Baker Street - 21st April (Part Two)
- 4.5: Diverse Timelines - 10th May (Part One)
- 4.6: Diverse Timelines - 24th May (Part Two)
- 4.7: The Inevitable Aftermath - 30th July (Part One)
- 4.8: The Inevitable Aftermath - 16th August (Part Two)
- 4.9: The Inevitable Aftermath - 22nd August (Part Three)
- 4.10: The Inevitable Aftermath - 29th August (Part Four)
- 4.1: Adrift in Red - 25th December 2013 (Part One)
- 4.2: Adrift in Red - 31st December 2013 (Part Two)
- 4.3: Who's On Baker Street - 29th March 2014 (Part One)
- 4.4: Who's On Baker Street - 21st April (Part Two)
- 4.5: Diverse Timelines - 10th May (Part One)
- 4.6: Diverse Timelines - 24th May (Part Two)
- 4.7: The Inevitable Aftermath - 30th July (Part One)
- 4.8: The Inevitable Aftermath - 16th August (Part Two)
- 4.9: The Inevitable Aftermath - 22nd August (Part Three)
- 4.10: The Inevitable Aftermath - 29th August (Part Four)
4.1: Adrift In Red - Part One
Written by James Blowers
Originally Aired: 25th December 2013
Originally Aired: 25th December 2013
4.2: Adrift In Red - Part Two
Written by James Blowers
Originally Aired: 31st December 2013
Originally Aired: 31st December 2013
Who's On Baker Street - The Prequel
Written by James Blowers
Originally Aired: 8th March 2014
Originally Aired: 8th March 2014
4.3: Who's On Baker Street - Part One
Written by James Blowers & Christopher Eden
Originally Aired: 29th March 2014
Originally Aired: 29th March 2014
4.4: Who's On Baker Street - Part Two
Written by James Blowers
Originally Aired: 21st April 2014
Originally Aired: 21st April 2014
4.5: Diverse Timelines - Part One
Written by James Blowers
Originally Aired: 10th May 2014
Originally Aired: 10th May 2014
4.6: Diverse Timelines - Part Two
Written by James Blowers
Originally Aired: 24th May 2014
Originally Aired: 24th May 2014
4.7-4.10: The Inevitable Aftermath - Parts 1-4
Written by James Blowers
Coming July 2014
Coming July 2014