Irene Adler was a for hire dominatrix, but was still romantically interested in Sherlock Holmes. She had two near death experiences over 2011 and 2012.
A Scandal In BelgraviaEdit
Irene had compromsing photographs of (presumably) a member of the Royal Family. She had a fascination with Holmes, so when he went to see her (to get the photographs) she was completely naked (partly to shock him). Sherlock deduced that the photographs were in a safe in the room and also that the passcode was made up of her body measurements.
To be completed