TV Guide Crime & Investigation Network Sunday

Professor of forensic psychology Dr. Katherine Ramsland talks to Dennis Rader, who terrorized Wichita, Kan., under the guise of his alter ego, BTK.

Dr. Katherine Ramsland explores the childhood memories of BTK to determine if there were any signs from his upbringing to suggest he would become violent.

After 1978, when BTK seemingly disappeared from Wichita, he continued to quietly stalk his victims and to kill with even more sadistic violence.

As Dr. Katherine Ramsland learns about the mind of the BTK Killer, she discovers the fatal mistake that eventually led to his capture.

A kidnapping victim recounts her harrowing experiences as she describes how she was abducted as a 17-year-old girl on her way home from work.

Fabienne Witherspoon discusses how she fought against the man who tried to kill her after she was attacked in her own home at the age of 19.

In 1975, William Bonin abducts 14-year-old David McVicker in California and then embarks on a killing spree; David recounts details about the Freeway Killer.

Tiffany Taylor discusses being held captive and brutally assaulted in New Jersey after agreeing to give a ride to a man in exchange for cash.

Presented is a look at the rise and fall of Albert "Alpo" Martinez, a New York drug dealer who made a considerable fortune selling heroin and cocaine.

In 2002, the leader of a motorcycle club transforms the organization into criminal group that participated in drug running and murder.

In Philadelphia, a woman assists her husband with a drug trafficking business, ferrying cocaine and heroin from Los Angeles into the city.

The case against a violent New Orleans gang who ran a successful drug trade and contracted hits was compromised when Hurricane Katrina hit in 2005.

Presented is a look at "Mad Sam" DeStefano, a sadistic mob enforcer who is considered one of the most violent and outrageous characters in mob history.

A notorious, underworld organization labeled "The Syndicate" executes mob hits that results in the murders of an estimated 1,000 people across the U.S.

Carmine "The Snake" Persico stands as one of most enduring Godfathers in mafia history after spending over 30 years as the head of the Colombo crime family.

An infamous Italian gangster gains a reputation for extorting large sums of money from various labor unions and several of Hollywood's prominent film studios.

An exposé chronicles the life of John Gotti, a former leader of the Gambino crime family who was known for his flashy style of dress and merciless temper.

A Chicago man becomes part of the city's top organized criminal faction where his responsibilities include handling violent tasks and overseeing casinos.

A New York gangster works for the infamous Lucchese crime organization, embezzling millions of dollars and ruthlessly murdering anyone who thwarts his efforts.

The profile of a notorious Philadelphia Mafia boss recalls his criminal reign that was marked by his outlandish behavior and complete disregard for authority.

One foot soldier comes up with a scheme to murder his way through the ranks to be one of the city of Boston's most famous gangsters.

Two warring factions of the American Mafia in 1980s New York gives rise to one capo who will lead one of the world's most influential criminal organizations.

One foot soldier comes up with a scheme to murder his way through the ranks to be one of the city of Boston's most famous gangsters.

Two warring factions of the American Mafia in 1980s New York gives rise to one capo who will lead one of the world's most influential criminal organizations.

A New York gangster works for the infamous Lucchese crime organization, embezzling millions of dollars and ruthlessly murdering anyone who thwarts his efforts.

The profile of a notorious Philadelphia Mafia boss recalls his criminal reign that was marked by his outlandish behavior and complete disregard for authority.