I went up to the top of the Gondola base and found a parachute.  After picking up the parachute, I found a note or something. I can't remember much detail about it as it was a one-time message but I believe it was a note that was a clue to someone's death, and part of some mystery that is solve-able in the game.  Anyone else find this, or remember what the note said?

It's part of a mystery of solving the murder of Leonora Johnson. Collecting 50 letter scraps will unlock the mission. Solving the mystery gains the player the achievement/trophy "A Mystery, Solved".

Ok, thank you!