Mark of a Serial Killer, Keys to a Killer

S2 E1 • 43m • HDTV14

Minnesota police hunt for a killer caller who confesses to a string of murders.

S2 E2 • 43m • HDTV14

In the summer of 1976, the NYPD are chasing a man shooting at couples in parked cars.

S2 E3 • 43m • HDTV14

Brooklyn shopkeepers are afraid of closing time.

S2 E4 • 43m • HDTV14

In the 1990s, New York is on edge as a killer leaves coded clues at crime scenes.

S2 E5 • 43m • HDTV14

Young men go missing around Chicago during the 1970s; evidence leads police to a model citizen.

S2 E6 • 43m • HDTV14

Police find a string of murdered women in shallow graves in remote areas of the Alaskan wilderness.

S2 E7 • 43m • HDTV14

Numerous women are found dead with a unique ligature that looks like a dog collar and leash.

S2 E8 • 43m • HDTV14

The I-5 corridor in California is taken over by a brazen bandit who terrorizes the highway.

S2 E9 • 43m • HDTV14

A serial killer taunts Wichita, Kansas for decades with brazen letters.

S2 E10 • 43m • HDTV14

In the 1990s, Louisiana is terrorized by multiple serial killers.