Let's put your so called illness to the test.
— Jigsaw's tape for Mark Wilson[src]

The Flammable Jelly is a trap from the Saw franchise, appearing in the first Saw film.

Design and Function

This game took place in a dark room, only lightened by a small candle. The victim was completely naked and had a flammable substance smeared on his body, as well as a slow-acting poison coursing through his bloodstream. The only antidote was hidden inside a heavy safe in the room. In order to open it, the victim had to find the combination among hundreds of numbers written all over the walls. Due to the darkness, the victim was forced to take the candle and walk to the walls to be able to see the numbers, while the entire floor of the room was covered in glass shards. (Saw)


Mark Wilson's Test

Hello, Mark. If you're so sick, then why do I have so many photos of you up and about? Let's put your so called illness to the test. Right now there is a slow acting poison in your veins. The antidote is inside the safe. The combination to the safe is written on the walls. Hurry up and program it in, but watch your step. And by the way, that's a flammable substance smeared on your body, so I would be careful with that candle if I were you, or all the people you've burned with your act just might have their revenge.
— Mark Wilson's tape[src]

Mark awakes in his trap

The victim of this trap was Mark Wilson, a man who had defrauded the health insurance company of money by claiming he was seriously ill, even though he actually wasn't. Therefore, he was targeted by John Kramer, better known as the Jigsaw Killer, and his apprentice, Detective Mark Hoffman, who abducted him and took him to a pitch-dark room. When he woke up and received his instructions from an audio tape Jigsaw had left for him, he immediately panicked. Ridden by fear, Mark tried to find the combination in time before the poison could kill him, but after fumbling with the candle, he accidentally ignited the substance smeared all over his body, causing him to burn alive. While Mark tried to find the combination, he was witnessed by his abductors through a peephole in the wall. (Saw, V)


The crime scene was later found and investigated by Detective Allison Kerry, Detective David Tapp and Detective Steven Sing Thereby, Kerry discovered the peephole. Additionally, she also found a penlight, which Tapp ordered to be examined for fingerprints. Mark's corpse was taken to the morgue for his autopsy by Dr. Adam Heffner, while the safe with the antidote was taken to the evidence room. (Saw, VI)


  • In the scene where Mark tries to find the combination, he is shown wearing shoes. This is most likely a filming error.
  • It was never explained how Mark was supposed to find out the real numbers. It is possible that the correct numbers were written with a special color, which would only become visible if it was very close to a source of big heat, such as the burning candle.
  • Other theories suggest that Mark had to find a pattern in the numerical sequences or that he had to try out the various combinations by simply using the trial and error method.
  • It is possible that the health insurance company was Umbrella Health