Jack Worth, Associate Producer for "On the Case with Paula Zahn," reveals how a serial killer was caught after 10 murders, and why some were against giving him the death penalty.

Jessica Heasman, Associate Producer for "On the Case with Paula Zahn," discusses the criminal process for the murder of Rhonda Boggs and new evidence overturns a witness testimony.

Eric Ritter, Executive Editor for "On the Case with Paula Zahn," shares the story behind the shocking murder of two teens in the Arizona desert, an investigation that spanned more than 25 years.

Paula Zahn speaks with a victim who for weeks lay in a hospital bed, a prisoner in her own body.

Paula Zahn speaks with a confessed murderer who provides some shocking insight into why she decided to murder another human being in cold blood.

Current DNA testing reveals the truth behind the murder of Christine Schultz, but will it be enough to clear Laurie Bembenek of her murder?

Convicted killer, Laurie Bembenek and her boyfriend have been on the run for three months when their luck suddenly changes.

A man in Huntsville, Alabama is found dead in his mansion. The small town is shocked when his wife and her twin sister are suspected of murder, dubbing them "The Black Widows."

When a couple is found murdered on the fairgrounds, it becomes the first homicide ever in the 150-year history of the Iowa State Fair. Police unravel a shocking plot that leads back to the unlikeliest of suspects.

A tip leads Delaware state police to a man who matched their composite. When they search his truck, they find something very odd inside.

ATF agents try to piece together how the bomb that killed Kem was constructed and learn something shocking about where it was constructed.

Detectives dig deeper into Christie's relationship with her husband and find she might not be who she seems.

After the police bring Kay's friend Mike Kipp in for questioning, they realize that they might know who Kay's killer might be.

Detectives try to piece together where Juan Reyes was in the hours leading up to Richard's murder.

November 11, 1983, it was checkout time at the Comfort Inn in Santa Fe, New Mexico. But what appeared to be a routine morning at the motel quickly became an unforgettable nightmare when a housekeeper entered room 205 to clean up.

On June 5, 1987, Elaine Walker is murdered, detectives must solve several terrifying crimes before they can bring her killer to justice.

Jack Worth, Associate Producer for "On the Case with Paula Zahn," reveals how a serial killer was caught after 10 murders, and why some were against giving him the death penalty.

A trail of blood and broken cornstalks leads police to the body of 21-year-old waitress Lora Beth Williamson. Will police be able to find the evidence needed to bring a dangerous predator to justice?

Investigation Discovery congratulates Paula Zahn's on her 100th episode! All-new Sunday at 10/9c.

Paula Zahn speaks with Ashley Reeves, a young woman who nearly died at the hands of a high school teacher.

A deadly home invasion leaves Ron Stovall, a father of three dead. Why was the victim's wife, Angelica, the only eyewitness to the crime left alive?

A sexual predator viciously murders 16-year-old April Sima. Can investigators catch him before he kills again?

Young women with a similar description to Kathy began going missing rapidly around the same time that the 14-year-old girl was found dead. Was infamous serial killer Ted Bundy responsible?

Frances Carriere, a beloved mother of four is stabbed to death in her bathroom. A mysterious v shaped wound on her forehead finally leads police to her killer decades later.

Cristina Guggino, Associate Producer for "On the Case with Paula Zahn" discusses the events that made police question who and why someone murdered Sandra Martin.

Paula Zahn speaks with a confessed murderer who provides some shocking insight into why she decided to murder another human being in cold blood.

Paula Zahn meets with Ashley Laney, a woman who chose to murder for her lover.

On The Case Producer, Jack Worth, talks behind the scene case details regarding Lucy Johnson's death and her Mother's crusade to get a unborn victims law passed.

Kristin Ilagan, Associate Producer for "On the Case with Paula Zahn" discusses the evidence surrounding the brutal murder of Sister Margaret Ann Pahl, by a priest.

Current DNA testing reveals the truth behind the murder of Christine Schultz, but will it be enough to clear Laurie Bembenek of her murder?

Convicted killer, Laurie Bembenek and her boyfriend have been on the run for three months when their luck suddenly changes.

Jessica Heasman, Associate Producer for "On the Case with Paula Zahn" speaks about a case that has touched her most, the rape and murder of Jessica Keen.