A trial nears for Angelika Graswald, the woman accused of murdering her fiancé by pulling a plug on his kayak during a Hudson river outing. Prosecutors say Graswald wanted to end their troubled relationship and collect on a $250,000 life insurance policy. Defense lawyers say it was an accident and her confession was coerced by cops. Nancy Grace & Alan Duke discuss the case in this episode.

Our Crime Stories team has worked for months uncovering new information and taking a fresh look at old evidence in the search for answers in the mysterious disappearance of Chase Massner. We now ask you to help by raising questions about what you’ve heard so far. Nancy Grace and the team discuss those questions in this 6th episode.

Ashley Morris Mullis vanished from her Muncie, Indiana, home in September 2013, leaving behind an infant daughter and two sons. Don Morris has spent every weekend since handing out flyers and asking for people to help find her. This is despite his belief that his daughter and the man he suspects killed her are both dead. The father’s refusal to give up is fueled by his love for his young granddaughter, who is now living with the widow of his daughter’s boyfriend. Nancy Grace talks to this grieving dad about this shocking and complicated case.

Elizabeth Thomas’ father is asking a court to force witnesses to disclose everything they know about how Tad Cummins plotted to make the high school freshman his wife. Cummins, 50, is one of Tennessee’s most wanted fugitives after allegedly running away with his young student. This episode looks at revelations from a new court filing by her family.

The first 4 episodes introduced you to Stephanie Cadena, Chase’s mother, and Brad Clement, the friend who was the last known person to see Chase before he vanished 3 years ago. The person you have not heard from yet is Amanda Massner, Chase’s wife. This is unfortunate, since, Brad said some pretty bad things about Amanda when Nancy Grace confronted him in episodes 3 & 4. We still hold out hope the Amanda will talk to us directly, but until then, we can let you hear what Amanda said in the first weeks after her husband went missing.

Tucson police confirmed a body found in a remote area last month was Isabel Celis, the girl snatched from her bed and missing for the past five years. The break in the case was not "happenstance," according to the police chief, but he wouldn't give details about how the child's remains were found. Nancy Grace and Alan Duke discuss the dramatic developments in the case, which Nancy has covered closely for years.

Stephanie Cadena never met the last known person to see her son Chase Massner because detectives asked her not to contact Brad Clements. But as Massner's disappearance is handed off to the cold case unit, Nancy Grace arranges for the mother to surprise the key witness in an effort to get answers. This 4th episode takes you inside the motel room the morning it happened.

Fugitive teacher Tad Cummins and kidnapped student Elizabeth Thomas shopped for food at a Oklahoma City Walmart two days after they disappeared from Columbia, Tennessee, according to newly-revealed security camera images. Nancy Grace and Alan Duke discuss with Jason Whatley, the lawyer for Elizabeth’s family, what the photos tell us about where Cummins may have taken the 15-year-old girl.

Brad Clements has been pummeled by social media speculation since he's the last known person to see Chase Massner before he vanished on March 27, 2014. Amateur detectives questioned his story, suggesting it’s changed over time. Just as the probe is turned over to a cold case unit, Nancy Grace knocks on Clements’ door in an unannounced visit. This third episode of our series presents what happened after she walked in.

A former student of Tad Cummins shares a song the Tennessee teacher once serenaded her with. Dastiny Parrish tells Nancy Grace how Cummins courted her several years before he allegedly kidnapped 15-year-old student Elizabeth Thomas. The prosecutor in the kidnap case also speculates the teacher has taken the student to Mexico, where he may be posing as a church missionary.

Three years after Chase Massner vanished, his grieving mother calls on Nancy Grace to help find answers. Cobb County, Georgia, police are turning the case over to a cold case unit, but Grace tracks down key witnesses to retrace the Iraq War vet’s last known steps. She shares what she is finding over the next weeks in a special “Crime Stories” series. Nancy visits with Chase’s mom in this episode.

The lawyer for Elizabeth Thomas’ dad tells Nancy Grace about “disturbing” new details suggesting the 15-year-old girl did not want to go with Tad Cummins. The former high school health teacher had an “extreme dark side” only being discovered after he allegedly kidnapped the girl, attorney Jason Whatley says. Grace talks with the family’s two lawyers about the search for Cummins and the hope he’ll let the child go in this episode.

The disappearance of Chase Massner on March 27, 2014, has stumped police and devastated the Iraqi War vet’s family. As the probe is handed over to a cold case unit, Nancy Grace leads her own investigation at the request of Chase’s mom. She shares what she's finding over the next weeks in a special “Crime Stories” series, starting with episode 1 on the 3rd anniversary of Chase’s vanishing. (music by audionautix.com)

The Tennessee teacher now on the run with a freshman student frequently gave the 15-year-old girl back rubs and held hands with her at school, according to the lawyer for the teen’s father. There is a nationwide lookout for Tad Cummins, 50, wanted for aggravated kidnapping of Elizabeth Thomas. Nancy Grace interviews attorney Jason Whatley in this episode.

A prosecutor offers new clues suggesting Elizabeth Thomas did not leave voluntarily with former teacher Tad Cummins. The 15-year-old told her sister “if I’m not back by six o’clock tonight, call the police or come looking for me,” District Attorney Brent Cooper tells Nancy Grace. “My biggest fear is that she had changed her mind about going with Mr. Cummins and that she expressed that to him and he took her then forcefully,” he tells Nancy in this episode.

While Elizabeth Thomas’ father complains he was never told a teacher was romantically involved with his daughter, it’s revealed Tad Cummins’ wife works for a high-ranking school official. Police fear the teacher and the 15-year-old girl may be hiding far away from their Tennessee hometown. They reveal Cummins had search the web for info on marrying a teen. Nancy Grace and Alan Duke look at the latest in this episode.

An alarming number of kidnappings, rapes and murders have been linked to messaging applications that can easily be downloaded onto smartphones for free by pre-teens and teens. Police are warning about one especially popular mobile chat app called Kik, which the creator claims is used by 40% of US teens. Nancy Grace and Alan Duke explore the dangers in this episode.

The male teacher who is on the run with a 10th grade girl could be “far away” from their Tennessee town hometown, according to investigators. The Tennessee Bureau of Investigation is calling on people across the country to keep an eye out for Tad Cummins and Elizabeth Thomas, who they think may be camping in rural areas to avoid being found. Nancy Grace and Alan Duke update the search for Cummins, 50, who is wanted for the aggravated kidnapping of Thomas, 15.

A high school teacher is allegedly on the run with a 15-year-old female student and investigators warn he is armed and dangerous. Elizabeth Thomas was last seen stepping into Tad Cummins’ SUV at a Columbia, Tennessee gas station Monday. A nationwide Amber Alert was issued when police determined the teen was in extreme danger. Cummins lost his teaching job last month amid accusations about his close relationship to his student. Nancy Grace and Alan Duke take a close look at the investigation in this episode.

David Temple spent a decade in prison after a jury convicted him of murdering his wife, but the former high school coach is free while a Texas DA decides if he’ll be tried again for Belinda Lucas Temple’s death. She was 8 months pregnant when killed by a shotgun blast in her Katy, Texas, home in 1999. Prosecutors argued her husband wanted to get rid of her so he could marry his mistress. The conviction was tossed when an appeals court ruled prosecutor misconduct denied Temple a fair trial.

Georgia investigators are close to declaring the disappearance of Iraq War vet Chase Massner to be a cold case. Nancy Grace, however, won’t let the search for the father of two young girls go cold. Grace has literally taken to the streets to track down witnesses and clues about what happened to Massner, who was 26 years old when he vanished. The results of her personal investigation will be presented in a week-long series of “Crime Stories with Nancy Grace” episodes starting March 27, the third anniversary of Chase’s disappearance. This episode offers a preview of what she is finding.

Roman Polanski fled the United States 40 years ago because he feared a Los Angeles judge would send him to prison for years after he admitted having sex with a 13-year-old girl. The filmmaker, who found refuge in Europe, has renewed his legal effort to be allowed back in California with no more jail time so he can resume his movie-making career. Nancy Grace and Alan Duke debate Polanski’s case in this episode.

Casey Anthony appears to blame her parents — specifically her father — for the death of her two-year-old daughter in a new interview with the Associated Press. She tells the AP reporter that she doesn’t know what happened to Caylee, but that the child was in the care of her parents. Nancy Grace believes George and Cindy Anthony are the Tot Mom’s “other victims.”

Rhonda Stapley kept her near-death encounter with serial killer Ted Bundy secret for decades, fearing the judgment that could come if she told how he kidnapped and raped her. The Utah college student hitched a ride with someone she thought was a cute law student, but he took a detour and coldly announced he was going to kill her. It was only because she fell into a river and was swept away by a swift current that she escaped. Stapley talks with Nancy Grace about the pain that followed in this “Crime Stories” episode.

Casey Anthony, the Florida woman Nancy Grace dubbed “Tot Mom,” says she has no idea how her daughter Caylee died, but she has no trouble sleeping at night. Anthony’s controversial comments came in an Associated Press interview. Grace, who covered the search when two-year-old Caylee was missing and the acquittal of her mother on murder charges, has her own words for Anthony in this episode.