When all 50 Letter Scraps are collected, the 4-page letter is revealed along with the killer's identity and unlocking a new mission, A Starlet in Vinewood.

Here are all of the 100% completion rewards in GTA 5. The Career Criminal Trophy on Steam, PlayStation Network, or Xbox Live. An orange T-shirt that has "100%" written on the front will appear in Franklin's closet. Players can witness multiple UFO sightings at Mount Chiliad, Fort Zancudo, and Sandy Shores.