Jigsaw is the villain in the series of movies of chainsaw, played by American actor Tobin Bell.

Jigsaw is a 70-year-old man, helpless and terminally ill. Due to the unfortunate marriage and terminal illness, the old man decided to "spend time studying human nature" after failing to commit suicide.

The old man chose some mediocre people as the objects of trial. The process of interrogation is all kinds of strange traps and cruel puzzles, which are fatal.