Martha-meets-Mr-Saxon fic, soon to be canon-shafted

What it says on the tin. Works on the basis of widely held fan assumptions about this season's Big Bad.

Characters: Martha, Mr Saxon (gen)
Rating: PG at most.
Spoilers (I suppose) for the trailer and various rumours. The Doctor etc are property of the BBC, and so on. Misappropriation of a Sayers line.

( Nothing more deadly than principles )