brian carney, a forensic document examiner, analyzed the letters. carney had little to work with, but he did have some known signatures of virginia ridley on some official documents written years earlier, and he found a number of unmistakable similarities. >> the obvious features that you can see just at a glance are, for example, the three i's in virginia are very tall compa comparatively speaking. they're lower case letter forms, cursive writing. but if you were to draw a horizontal line right across the top of this "i," all the way to the end of the name, you would see that all of the i's are all taller than the other letter forms. you can clearly see that this "i" feature is a habitual writing movement of this particular writer. >> and i was able to state that there were strong indications that virginia was the writer of the comparable entries. so what we're essentially talking about is those letter combinations that are the same as the name virginia and the signatures that have the given name virginia. >> virginia's family told investigators th