Behind the scenes, a man with a bandaged face appears at all of the crime sites and seems to be orchestrating the plot.

Everyone was here, but for once nobody who shouldn't be was walking around the crime site.

We've got the DNA make on a person who might or might not have been at the crime site at the time of the murders.

A tour of notorious crime sites.

Keith Coleman, 21, who grew up nearby, drove his car up to the crime site.

Much of the material, the investigators say, is similar to bomb material recovered at various Unabom crime sites.

It suggests that crime sites and opportunities are not random.

Target backcloth (the spatial opportunity structure of crime sites)

Her bosses and colleagues figure the killer is a man, but DNA gathered from past crime sites shows it might be a woman.

Often she accompanies him on the crime site.