Experts work to tell the stories of men who went to war and never came back, from the French and Indian Wars to the Vietnam War.

One case concerns a serial killer who phones police confessing he murdered someone; he is captured a few blocks from the pay phone. To convict him, they need to prove there's been a murder (a body would help), tie it to the perp, and motive might help. Led to the disposal place of one victim, a tool marks expert links the bone's cut marks to the killer. But is he sane?

Chemists at the Forensic Science Center at Lawrence Livermore National Laboratory develop new techniques to capture killers who use poisons.

Psychological Profiling: Journey into the dark recesses and calculated madness present only in our worst nightmares...and in the minds of serial killers. Renowned FBI profiler Robert Ressler can reveal unseen clues about a killer simply by learning details about the crime. From motives to habits, social traits to taste in cards, investigative profiling discloses a killer's hidden motives.

Forensic photographers are often among the first people at any crime scene. Scientists examine cases where forensic photography is used to solve murders.

DNA can be used to convict or exonerate a person, identify criminals and victims, and can be collected in a variety of ways.