While playing GTA 5, you may come across clues related to what has become known as "The Infinite 8 Mystery." It is actually the in-game story of a serial killer, Merle Abrahams.

In Sandy Shores, you can find a newspaper clipping with the headline "Suspected Killer Merle Abrahams Dies in Prison." It is dated December 2004, and deals with events even further in the past. The clipping reveals details about the eight murders known as the Infinity Murders. They were attributed to Merle Abrahams, and while he never confessed, "he did admit to a weird obsession with the number 8."

Our walkthrough of the Infinite 8 Mystery starts at 09:04 in the above video.

There is also a burnt out house in Sandy Shores that has "Go away Merle Abrahams. You're a wrong un" written on one of the outside walls, along with the number 8. This is believed to be a message written by the man's neighbors to try to drive him away. When the house was set on fire, he was forced to leave.

Merle's obsession with the number 8 led him to believe he needed to kill eight people to perform a certain ritual. Inside the house, a message states, "There will be 8." Beneath it are five tally marks. This suggests he had killed five of his victims already. Above the message is a simple drawing that may look like Mount Chiliad, but is actually a northern part of the game map.