(Sequel to Deadlock) Being a companion is tougher than Osgood had suspected. Concerned about the morally questionable situations she might find herself in whilst travelling with The Mistress, Osgood had braced herself for everything from murder to mayhem, everything but not boredom and tea, knitting or hideous tea cosies. So a side trip to Aquila should surely be a welcome change? Wrong. Some Missy/Osgood and heavily implied Doctor/Master, Twissy, Best Enemies.

Spoilers Series 8 AU Ending: What if someone else got to The Master before The Brigadier? The Doctor has a murder mystery on his hands and only the garbled dying thoughts of The Master to help him solve it. Can The Doctor make sense from the mind of a lunatic? Can he find a way to save them all? Twissy, Osgood, Missy & Twelfth Doctor