In the City of the Ghosts (A woman's letter ?)

It happened when calm and readyness to revise, control and close the last project at stake. A letter from a woman appeared in my desk. A woman's letter ?
I was decided to discover what for Detective Man would be a very simple case of false identity. So I enquiered myself: How does it match all together ? This first question was really impressive, no just this mess does not match at all, but incluse we could say that this is full opposite of a letter of a woman...a woman´s letter ?...