Season 5 - Episode Guide

BTK Dennis Rader terrorizes Wichita, Kan., for decades, leaving at least 10 murder victims in his wake.

Nearly 20 years after they first suspect him, police arrest Gary Ridgway, the most prolific known serial killer in U.S. history.

A deacon suspected of having an affair is found shot to death in Tijuana, Mexico; a woman claims she was assaulted by the man that killed her husband.

A detective tracks down a man who raped and murdered a 6-year-old girl 10 years earlier; police search for the killer of an 18-year-old hitchhiker.

Publicity of a man's mandatory release in Texas brings forth a witness to a murder in Michigan.

A cell phone and an ATM card lead to the apprehension of a rapist.

Detectives work to solve the 1995 rape and murder of a 14-year-old.

DNA evidence solves the murder of a female law student; a man confesses to the random killing of a bowhunter.

In 1987, a young girl is found raped and strangled; in 1983, a young mother is raped and murdered at work.

A wiretapped conversation between a suspected killer and his sister cracks a 9-year-old murder case; a geologist finds human bones, solving the murder of a Virginia woman.

A police detective suspects a killer preys on older women; a protective mother disappears after learning her daughter has been sexually molested.

Young girls are sexually assaulted while waiting for their school buses; in 1991, a 9-year-old girl disappears from her home and is found murdered.

A brother is a suspect in the case of a 12-year-old found dead in her home in 1998; a 69-year-old woman is the victim of rape and murder in 1984.

In 1995, two women are raped in Louisville, Ky.; in 1982, a young man is found murdered in Deadwood, S.D.

Detective Danny Reyes investigates the 1990 murder of a Fort Worth, Texas woman.

In 1947, actress Elizabeth Short's corpse is found nude and bisected in an empty lot.

Police go under cover to catch a man they suspect of killing three prostitutes; a letter opener links a priest to the murder of a nun.

A banker is beaten to death in his bed; a man with a guilty conscience helps police.

A missing sailor's sister works to prove he was killed; rape and murder.

The 1988 rape and murder of a California woman; a jailhouse snitch.

Two young girls are raped, murdered and dumped in an abandoned house; a 26-year-old mother of three disappears on Christmas Eve in 1995.

A 25-year-old woman is killed in a hotel room in 1978; a 25-year-old woman is shot to death during a jewelry-store robbery in 1980.

A woman is found murdered in her mobile home; an Oregon man is shot dead.

A Detroit cab-company owner is murdered in 1989; in 1986 a woman is found murdered in her bedroom.

Fingerprints lifted from two beer bottles help a California detective track down a prostitute's killer; the investigations of a woman's murder and the death of a man killed in a car crash use DNA analysis.