Logan Nelson

"I speak for the dead."

- Logan Nelson's quote in lieu of "Game Over." Logan Nelson is the hidden main antagonist of the latest installation of the SAW series. He is revealed to have been one of the earlier Jigsaw victims, who was selected because he is the one who accidentally mixed up Kramer's X-rays with another patient's. However, Jigsaw changed his mind and decided that Nelson shouldn't die because of an honest mistake and rescued him seconds before he was killed by the bucket trap. Afterwards, he decided to take up the Jigsaw mantle and make it look like John Kramer was still alive. He took advantage of the opportunity to get revenge on Edgar Munson, the man who killed his wife, as well as his condescending boss, Detective Halloran, who he later framed the new Jigsaw killings for.

Jigsaw
In his attempt to frame Halloran, Logan built a replica of the game played 10 years ago using criminals from Halloran’s cases. The first victim Malcolm Neil died from getting sliced up by the buzz saws and was hung above a bridge. He was visited by detectives where he and Eleanor examined the body. After being at the morgue and needing more evidence to find the criminals behind it.

Halloran became suspicious of Logan and Eleanor. In an attempt to throw him off he killed Edgar by slashing his throat and buried him in John's coffin, continuing the ruse that John may be alive. After a second body appears, Logan decides to visit Eleanor at a bar where she takes him to her replica warehouse unaware that Keith was following them. After the police raid the factory and find the third body Keith arrests Logan where he places the blame on Halloran and is let free, after manipulating evidence. After trying to phone Eleanor he finds her next to him where she tells him that she found where the original game played. They are followed by Halloran, and while Logan appeared to be knocked unconscious, he later subdued Halloran by sedating him.

Logan and Halloran awake in a room with collars strapped to their necks. They are then told via a speaker with John's voice that they must confess they crimes or they will be killed via multiple laser cutters to the skull. Logan goes first because Halloran pressed his button claiming he would go first, Logan confessed to mislabeling John's x-rays years ago but is then appeared to be killed. Halloran then confesses to letting criminals walk free which make the lasers stop. He then notices that Logans lasers did not puncture the roof since they were not as powerful as the ones in his own collar and there were blood capsuals that burst the blood. Logan then reveals that after he was sliced by the buzz saws he was saved by John (which he still has scars from) and became an apprentice, Since Halloran did not confess to letting Edgar free, Logan executes Halloran by re-activating the lasers. Logan then leaves claiming that Eleanor will be his alibi, allowing him to remain free and get away with his crimes.