Finding all Letter Scraps in GTA V will unlock an Achievement or Trophy (A Mystery, Solved – Solve the mystery of Leonora Johnson) and will give you 15 Gamerscore or a Bronze Trophy. There are total 50 Letter Scraps that can be found in PC, PS3 and Xbox360 versions of the game.
Letter Scraps Locations Guide
First of all, uncover the whole map to discover all collectibles, and Helicopter is recommended to do it. When collected all 50 letter scraps, read the letter and solve the murder of Leonora Johnson’s murder mystery and find the killer. Now switch your character to Franklin, a mission will unlock and will show killer’s location.