Mark of a Serial Killer, The I-40 Killer

S3 E1 • 43m • HDTV14

A killer is murdering and mutilating young women along the Route 40 corridor in Delaware.

S3 E2 • 43m • HDTV14

Police seek help finding a dangerous drifter after multiple men are brutally murdered.

S3 E3 • 43m • HDTV14

After women are murdered, police suspect the killer is able to charm his victims into submission.

S3 E4 • 43m • HDTV14

Female murder victims are discovered in abandoned buildings barefoot.

S3 E5 • 43m • HDTV14

Detectives believe that a serial killer is using classified ads to lure and murder his victims.

S3 E6 • 43m • HDTV14

A killer crisscrossing the Midwest and leaving a string of victims suddenly changes his mark.

S3 E7 • 43m • HDTV14

A cold-blooded killer conceals his victims' bodies with trash in the back alleyways of Los Angeles.

S3 E8 • 43m • HDTV14

A killer taunts the media and authorities as he uses homemade ligatures to murder his victims.

S3 E9 • 43m • HDTV14

El Paso investigators race to track down a killer who buries his victims in shallow desert graves.

S3 E10 • 85m • HDTV14

Two serial killers compete for the media's attention and the bodies pile up.

S3 E11 • 43m • HDTV14

Louisiana investigators hunt for a serial murderer who carves up the bodies of his victims.

S3 E12 • 43m • HDTV14

A task force is formed when multiple bodies are dumped around Louisiana's bayou area.

S3 E13 • 43m • HDTV14

A killer in Hartford, Conn. is known for leaving a devastating mark that leaves his victims nearly unrecognizable.

S3 E14 • 43m • HDTV14

A serial sniper terrorizes the entire DC metro area by discreetly targeting random victims.