After beating her test, Amanda Young becomes the first known survivor of a Jigsaw game. She comes to see John as a hero who changed her life for the better; and, on John's request, becomes his protégée and next apprentice. John shows her rehabilitation to Jill, who becomes aware of his traps and becomes somewhat of an accomplice as well. In Saw, John chains the man who diagnosed his cancer, Dr. Lawrence Gordon, in a dilapidated industrial washroom with Adam Stanheight, a photographer who has been tailing the doctor, believing he is cheating on his wife. Lawrence has instructions to kill Adam by six o'clock or his wife and daughter will be killed. Flashbacks show Detectives David Tapp and Steven Sing, who suspect Lawrence of being Jigsaw, following a trail of clues from other Jigsaw traps. Sing's death from a shotgun trap after saving a victim causes Tapp to obsess over catching Jigsaw. Later, he chases Zep Hindle, who monitors Adam and Lawrence's tests, and is shot in the chest. Eventually, Lawrence saws off his own foot to escape, leaving Adam in the bathroom while Lawrence tries to save his family and get help for Adam. It is later seen in Saw 3D that Lawrence found a steaming hot pipe and cauterized his wound, stopping the bleeding and ultimately surviving the trap. John catches up with Lawrence and makes him his next apprentice, a fact he hides from his other accomplices. Flashbacks from Saw III show that Amanda kidnapped Adam and later returned to suffocate him as an act of "mercy killing". Saw II begins with the police tracking a severely weakened John to his lair. However, another test is in place, as he and Amanda have kidnapped the son of Detective Eric Matthews and trapped him and a group of seven convicts, previously framed by Eric, in a house that is slowly being filled with sarin gas, with Amanda among them. He will trade Daniel Matthews' life for Eric's time, conversing with him until the game is concluded. Eric loses his patience and assaults John, forcing him to take him to the house, only to discover that the video feed from inside the house had been pre-recorded; the events in it actually took place much earlier. Eric's son was locked in a safe in John's warehouse and kept alive with an oxygen tank. Eric is knocked unconscious by a