18x1 - The Ring: The Murder of Patrick De La Cerda

March 31, 2022

The investigation of the murder of Patrick De La Cerda reveals a meticulous murder plan that investigators say was crafted by a man jealous of De La Cerda's relationship with his fiancee.

18x2 - The Murdaugh Mysteries

April 7, 2022

A mother and son dead, a young woman killed in a boating crash and two other mysterious deaths all with a connection to the influential family of disgraced attorney Alex Murdaugh; Nikki Battiste investigates this bizarre and tragic story.

18x3 - The Online Life and Death of Bianca Devins

April 14, 2022

Jericka Duncan investigates the death of popular social media figure Bianca Devins and highlights her family's fight to hold social media companies accountable for violent and graphic content that they allow on their platforms.

18x4 - A Promise to Ahmuad

April 21, 2022

The viral video of Ahmaud Arbery being chased and shot dead in Brunswick, GA, in February 2020 captured global attention. Omar Villafranca goes inside the trial against the three white men accused of killing a Black jogger and their verdicts.

18x5 - What Happened to Gabby Petito?

May 2, 2022

The 2019 disappearance of travel blogger Gabby Petito while on a cross-country trip with her fiancé, Brian Laundrie, generated nationwide interest; the journey originally documented online turned into a virtual search party; Jericka Duncan reports.

18x6 - A Killer in the Family Tree

May 9, 2022

When Chelsea Rustad uploads her DNA to a public database, she never expects to discover that a family member may have committed a double murder. The killer eluded police for 31 years, only to be identified by a genetic genealogist.

18x8 - The Secrets of Chad Daybell's Backyard

May 23, 2022

Chad Daybell and his wife, Lori Vallow Daybell, face charges of murdering her children, JJ Vallow and Tylee Ryan; in their first television interview, Chad Daybell's five children defend their dad.

18x9 - Jasmine Hartin's Shot in the Dark

May 30, 2022

Jasmine Hartin, a socialite accused of fatally shooting police superintendent Henry Jemmott in Belize, tells her story to Peter Van Sant.

18x10 - Linda's Story

June 20, 2022

For nearly 45 years, the murder of 11-year-old Linda O'Keefe continues to haunt California's Newport Beach Police Department; new technology and social media can turn the tide and help track down her killer; Tracy Smith investigates the cold case.

18x11 - The Life and Death of Nikki Kuhnhausen

June 27, 2022

Nikki Kuhnhausen disappeared in June 2019 after connecting with a man in a Snapchat rendezvous; the transgender teen's murder ultimately inspired a new law and started a nationwide movement; Jamie Yuccas reports.

18x12 - Episode 12

18x13 - The Final Hours of Amie Harwick

July 21, 2022

Hollywood family therapist Amie Harwick helped many patients who were victims of sexual abuse. Her shocking death in 2020 put a spotlight on domestic violence. Erin Moriarty reports on the latest evidence collected by authorities.

18x14 - Episode 14

18x15 - Episode 15

18x16 - Katrina Brownlee: The Good Cop

August 11, 2022

Katrina Brownlee shares her emotional story of being shot by an abusive ex-fiancé, then pleading for help from the police, who she says ignored her; she shares how she used that experience to become a top NYPD police officer; Michelle Miller reports.

18x17 - Searching for Maya Millete

September 26, 2022

Maya Millete disappears from her Southern California home in January 2021 and suspicion falls on her husband when investigators learn the seemingly perfect couple had marital problems; Jonathan Vigliotti reports.

18x18 - The Plot to Kill Jamie Faith

October 3, 2022

Peter Van Sant investigates the death of mild-mannered airline employee Jamie Faith and the twisted tale behind his murder.

18x19 - Suzanne Morphew Case: Nothing is What It Seems

October 10, 2022

Colorado mother of two Suzanne Morphew vanished on Mother's Day 2020. Then, bizarre clues emerged - a chipmunk-chasing alibi from her husband, a spy pen and an affair. Peter Van Sant reports.

18x20 - The Poisonous Wife

October 17, 2022

Peter Van Sant investigates the death of snake breeder Ben Renick, originally thought to be the victim of an attack by one of his prized reptiles.

18x21 - The Dexter Killer

October 24, 2022

Just over a decade after Mark Twitchell was convicted of murdering Johnny Altinger, who prosecutors say he lured into a garage, stabbed and dismembered, Troy Roberts takes a rare look inside Twitchell's mind through his writings.

18x22 - Eric Smith: Gambling on a Killer

November 7, 2022

Eric Smith spent 28 years behind bars for the 1993 murder of 4-year-old Derrick Robie; he was released from prison in February 2022; Jim Axelrod reports on whether he is a changed man.

18x23 - Please Don't Tell

November 28, 2022

18x24 - What Ally Kostial Didn't Know

December 5, 2022

Michelle Miller investigates the murder of Ally Kostial, and the trail detectives followed to find her killer; prosecutors say this case raises questions about missed warning signs in relationships and whether her murder could have been prevented.

18x25 - Who Shot the Tech Exec

December 12, 2022

Successful tech-executive-turned-cannabis-entrepreneur Tushar Atre was found stabbed and shot on his cannabis farm in the Santa Cruz mountains; Tracy Smith investigates his kidnapping and murder and follows the trail that led to four suspects.

18x26 - Chasing Catherine Shelton, Part 1

December 30, 2022

For nearly 30 years, former Texas defense attorney Catherine Shelton's links to dead or injured men has puzzled investigators; contributor Jenna Jackson talks to Shelton about her checkered Past.

18x27 - Chasing Catherine Shelton, Part 2

December 30, 2022

Focusing on a bizarre hanging death in a house Catherine Shelton owned and on the murder that landed her husband in prison for life; Shelton talks about the many allegations made against her to contributor Jenna Jackson.

18x28 - Gabby Petito: The Untold Story

January 16, 2023

The 2019 disappearance of travel blogger Gabby Petito while on a cross-country trip with her fiancé, Brian Laundrie, generated nationwide interest; originally documented online, the journey turned into a virtual search party.