In film In
Saw, David Tapp is a police detective who investigates a series of crime scenes linked to the same murderer. The victims have been placed in to traps that attempt to teach them to appreciate their life, a quality they decidedly lack. The victims who fail these "tests" have a jigsaw piece cut out of their bodies. This has earned the killer the alias "
The Jigsaw Killer" by newspaper writer
Oswald McGillicutty.
Saw II later reveals these missing pieces have been intended to show the missing survival instinct of Jigsaw's victims. At one of the crime scenes, Tapp and his partner, Detective
Steven Sing, discover a penlight with fingerprints on it. Forensics indicate that the fingerprints belong to
Dr. Lawrence Gordon, who is taken to the police station for questioning.
Saw V later revealed that Jigsaw accomplice
Mark Hoffman had planted this penlight to arise suspicion on Lawrence. While a few victims have already been discovered, one victim named
Amanda Young manages to survive her test. Lawrence watches while Tapp interrogates Amanda for her testimony. After hearing her testimony, Tapp gives Lawrence a ride home and becomes more suspicious that Lawrence is Jigsaw. Tapp also appears in a flashback, inquiring Lawrence about the penlight Hoffman planted.
Danny Glover was originally set to make a cameo appearance as Tapp in
Saw V, but could not show up due to scheduling issues. The scene was originally for Tapp to attend
Seth Baxter's murder scene, but was changed with Hoffman instead. For
Spiral: From the Book of Saw, it was briefly played around the possibility of having Tapp be related to Detective
Zeke Banks, the main protagonist of the film, but according to co-writer
Josh Stolberg, the idea did not "pass the smell test".
In video games Saw: The Video Game In the video game adaptation of
Saw (2009), set after the events of the first film, Tapp is revealed to have survived his gunshot wound and is healed back to health by Jigsaw. He is brought to the abandoned Whitehurst Asylum where he is placed in the reverse bear trap Amanda Young was in. He quickly escapes after Jigsaw scolds him for his lack of appreciation for his life and the lives of others. Upon escaping, Tapp ventures through the asylum where he faces others during their tests. Some of these tests involve Tapp in numerous ways. Tapp's first test is to save Amanda, the woman he interrogated during
Saw, unbeknownst to him that she had become Jigsaw's secret apprentice. Upon saving her, she stages her kidnapping by another Jigsaw apprentice called
Pighead, and Tapp moves to his next test. The second test is for
Jennings Foster, a fellow officer of Tapp's who had committed a hit-and-run which he framed an innocent person for. A conflicted Tapp saves Jennings who runs away and blames Tapp for being there. Believing Tapp could have prevented his partner's death, Melissa began to blame him for her misfortunes. Upon Tapp finding and saving her, Melissa leaves Tapp to deal with his other tests. ==Characterization==