Originally aired on November 22, 2005, on FOX network, the episode is written by Noah Hawley and directed by David Jones.
The plot focuses on Dr. Temperance Brennan and FBI Special Agent Seeley Booth's investigation into a seven-year-old murder, of which death-row prisoner Howard Epps is accused.
After being sent by Brennan to photograph the surrounding area of the crime scene, Zack suddenly realizes the significance of the numbers that were found with the victim.
In addition with a visual confirmation of the pubic hair to be of David Ross, the team begin to have doubts about the guilt of the inmate.
Booth interrogates Ross, who claims that the victim had run away after they had engaged in sexual intercourse and that he had waited for her to return for two hours before leaving the parking lot.
It provided the writers a "rich territory for drama" and showed what Brennan and the scientists would do if they had the opportunity to save a life.