Crime Exposé with Nancy O'Dell

It was a cold October morning when Cobb County Police were called to the 2nd homicide reported near Gordon Circle in the same week. John Peek tells dispatch that his wife, Kasi, is unresponsive on her bed and appears to have a bullet wound in her back. Could these two murders be connected, and could this city have a serial killer on the loose?

Graduate student and activist Gelareh Bagherzadeh was shot outside her Houston home. Soon after, Coty Beavers, husband of her friend, was also murdered. Ali Irsan, furious that his daughter married a Christian, ordered his son Nasim to kill Gelareh while he killed Beavers. Both were convicted, and Ali is on death row.

After winning $30 million in the lottery, Abraham Shakespeare was hounded by people wanting his fortune. When he vanished, his advisor Dee Dee Moore claimed he needed a break. In reality, she stole his money, murdered him, and buried his body on land bought with his cash.

When a popular shop owner was savagely stabbed to death in the back of his store, the evidence left at the scene was perplexing. Was Frank Botts murdered by someone he knew, or was he the victim of a robbery that had gone terribly wrong?

In September 2009, college sweethearts Annie Le and Jonathan Widawsky are finalizing the details of their New York wedding. But when Yale Graduate student Annie goes missing a week before the ceremony, Jon wonders if his bride-to-be got cold feet. As evidence is uncovered, it's revealed that Annie fell victim to a violent struggle and a heinous crime.

When single 43-year-old mother of two, Susan Bailey, didn't show up for work, her family grew worried. The search for Susan was a long and twisted one for investigators-a search that included a bowl of poisoned chocolate pudding, recently cut hair, a kitchen knife submerged in water, and a bathtub rigged for an electrocution.

When a 22-year-old college student is viciously assaulted and murdered in her boyfriend's apartment, detectives focused in on those closest to her. But as the investigation expanded, law enforcement searched for the critical clue they needed to put the dangerous predator behind bars.

A wealthy Florida couple was murdered in their home, where nine of their 16 children were sleeping. Eight people were eventually charged in connection with their murders. The motive was burglary.

When 36-year-old Cari Farver vanished in Omaha, texts from her phone claimed she'd moved to Kansas. But three years later, police uncovered a sinister plot by Liz Golyar, the jealous lover of a man Cari had dated. Golyar had impersonated Cari through messages, and photos of Cari's body were found on her phone. Cari's body was never recovered.

When beloved music teacher Deborah Liles is discovered dead in her own home, police believe the crime was personal. However, her five children discover surveillance video that leads police to the killer's doorstep. 24-year-old Adam Lawson pled guilty to first-degree murder and was sentenced to life in prison.

Keith Wolf and his wife and 7-year-old daughter were having a relaxing evening together when a strange sound came from their basement. No one could imagine the tragic turn their lives would take when he armed himself and walked down the stairs to investigate.

Former Texas prosecutor Mark Hasse was gunned down, followed three months later by the murders of Judge Mike McLelland and his wife Cynthia. The killers-disgraced ex-justice of the peace Eric Williams and his wife-sought revenge for his prosecution and disbarment. Both were caught and convicted.

Grant Hayes and his new wife Amanda, were locked in a bitter custody battle with his ex, Laura Ackerson. Grant killed Laura and, with Amanda's help, transported her body from North Carolina to Texas, where they dumped it in a lake to be eaten by alligators. Both were convicted.

Wife, mother, and police officer, Linda Yancey was shot dead at home by a day laborer. Investigators uncovered her troubled marriage, heavy debt, and a scheme by her husband, also a cop, who hired the killer and staged the scene for insurance. He fled to South America but was captured.

When 28-year-old Vickie Belk vanished while running a lunch errand, her disappearance shocked the community. Detectives feared a serial predator was at large, and until he was caught, no young woman would be safe.

Former child actor Skylar Deleon answered an ad for the Hawks' 55-foot yacht. Thomas and Jackie Hawks were last seen sailing with him and two friends. Investigators later determined the trio murdered the couple and stole their boat.

Chris Smith's family believed he was taking a once-in-a-lifetime trip around the world, until discovering he'd been murdered by his business partner, Ed Shi, who posed as Smith for months to cover up the crime.

An elderly mother and her two adult sons were brutally murdered in rural Florida, sparking rumors of witchcraft. The family's large estate also raised suspicions, leaving investigators to question whether the motive was occult beliefs or simple greed.

Pregnant mother of two, Makeva Jenkins, 33, was shot in her sleep, at first believed to be mistaken identity. Digital evidence revealed a murder-for-hire plot by her husban,d Euri, who wanted her life insurance. Unbeknownst to him, Makeva had recently made her mother the beneficiary.

30-year-old Jo'el Cosby was found dead on a roadside in Geneva, FL. Investigators learned he was last seen arguing with his on-and-off girlfriend, Jaide Caporale. Digital forensics and DNA revealed that she and Marvin Bryant, father of her child, plotted his murder. Both were arrested and charged.

College student Shannon Melendi was kidnapped and murdered after working as a scorekeeper for a softball game. The only evidence in the case was a single piece of cloth. Investigators were eventually able to link it to Colvin 'Butch' Hinton…a man who worked as the umpire in the game.

When devoted husband and father Michael Williams vanished while duck hunting, the family feared a tragic accident. But the investigation soon revealed a dark path of lies and betrayal behind his disappearance.

Mary Scott was found beaten and strangled in her apartment, raising fears of a serial predator. When a similar crime occurred nearby, detectives believed the cases were linked. But the investigation soon took a shocking and unexpected turn.

When Maureen Karr's home burned down with her body inside, it first seemed she died in the fire. But investigators found her hands bound and the blaze intentionally set. The killer was her estranged husband, James Karr, who had been threatening her after their breakup.