Dear God, Holmes, how do you do it?

( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:32, 2 replies, latest was 12 years ago)

I first became suspicious when the publican made reference to the surveillance footage.
As you can see, the scuff marks around the lock match precisely those made by a ladies' nail file. The nail file which you yourself noticed in Lady Abingdon's study last night!
( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:34, Reply)

Then that must mean....

( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:35, Reply)

Precisely, Watson!

( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:35, Reply)

etc

( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:36, Reply)

I can tell by her limp that she worked as a brickie for seven years in her youth.
The tattoo implies she had a brief stint in the Royal Navy but was discharged due to her mental issues, which you'll note, is obvious from how she carries her handbag.
( Theoban What of it, Fri 5 Apr 2013, 15:35, Reply)

But the reference to Swindon - come now, Holmes, even you....

( Monty Boyce, My cheese game is strong, Fri 5 Apr 2013, 15:36, Reply)