On the Trail of...

Over the course of two months in spring 1992, an unidentified man strikes at least five times in different cities along the highway; he kills six store clerks in quiet shipping plazas, using a gun and a particular method.

Travel through the locations of David Berkowitz, better known as the Son of Sam killer; from his childhood home, his first attack, the Son of Sam crime scenes, his apartment and arrest site to more.

Traveling through the locations of David Berkowitz, better known as the Son of Sam killer, from his childhood home, his first attack, the Son of Sam crime scenes, his apartment and arrest, site and more.

A two-month period at the end of 1999 saw seven or more homeless men killed in Denver's LoDo neighborhood; to date, only one of those murders saw an arrest; is it a violent turf war, or did a serial killer prowl the city streets?

In the early 1970s, Washington D.C. is terrorized by the Freeway Phantom, a mysterious killer who abducts and murders young women along the highway; despite numerous leads, the killer is never caught, leaving the case to grow cold.

Between 1982 and 1983, three women in Battle Creek, Mich., are similarly killed; despite a separate confession in each killing, all remain unsolved; did a satanic cult murder these women?