The Strange Death of Professor Shockley

June 5, 2023

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48 Hours on ID - S19 - E8

A night of music and hot-tubbing leads to professor Marianne Shockley's death and former psychologist Clark Heindel killing himself; police charge Shockley's boyfriend, Marcus Lillard, with her death.

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48 Hours on ID: Season 19 - 28 Episode s

19x1 - A Man With a Past
April 9, 2023
Lori Ann Slesinski vanished in 2006, and police believed the prime suspect, her friend Rick Ennis, was the last to see her alive, and he killed his parents when he was 12.
19x2 - The COVID Cover-Up: Searching for Gretchen Anthony
April 16, 2023
When Gretchen Anthony's friends and family began receiving texts saying she had coronavirus, they grew worried. Then the messages stopped. Was she sending the texts, or was someone using COVID-19 to cover up her disappearance? Peter Van Sant reports.
19x3 - The Kidnapping of Schanda Handley
April 26, 2023
Kidnapped at gunpoint, Schanda Handley knew exactly who was behind it -- her ex-husband, Michael Handley; a tumultuous relationship riddled with threats and assaults turned even more hostile the day Schanda was convinced she would die.
19x4 - The Snapchat Clue
May 8, 2023
After married couple Krista and Bart Halderson suddenly disappears, clues on the social media app Snapchat point to a culprit that no one would ever suspect.
19x5 - The Unsolvable Murder of Roxanne Wood
May 15, 2023
In 1987, Terry Wood comes home to find his wife, Roxanne Wood, dead; investigators preserve DNA, but technological limitations of the time turn the case cold, until now.
19x6 - Last Seen in Breckenridge
May 22, 2023
Detectives link the 1982 murders of two women near Breckenridge, CO, through matching orange socks, but the case goes cold for decades until investigators turn to genealogy for clues.
19x7 - The Case Against Michael Politte
May 29, 2023
In 1998, police charge 14-year-old Michael Politte with the murder of his mother, Rita, after she was hit on the head and set on fire in her Missouri home; a jury sentences him to life without parole until a law passes that may give him a chance.
19x8 - The Strange Death of Professor Shockley
June 5, 2023
A night of music and hot-tubbing leads to professor Marianne Shockley's death and former psychologist Clark Heindel killing himself; police charge Shockley's boyfriend, Marcus Lillard, with her death.
19x9 - The Tree That Helped Solve a Murder
June 12, 2023
Joseph Elledge reports his wife Mengqi Ji missing; they uncover her remains buried under a juniper tree; police try to use DNA found on that tree to catch her killer.
19x10 - The Shooting of Lauren Kanarek
June 19, 2023
Olympic equestrian-turned-trainer Michael Barisone claims temporary insanity when police charge him with the attempted murder of Lauren Kanarek, a student he shot twice in the chest after she tried to ruin his reputation online.
19x11 - Death Hits Home: The Hargan Killings
July 10, 2023
Millionaire mother Pam Hargan, and her adult daughter, Helen, are found murdered in their northern Virginia home. Police tell the family that it looks like a murder-suicide. Did Helen shoot her mom and then take her own life, or is something else at play?
19x12 - Melissa Turner's Closing Act
August 20, 2023
Melissa Turner of Florida called 911, saying she had discovered her fiancé, Matthew Trussler, lying unresponsive near their swimming pool; he was pronounced dead at the scene in October 2019, but an autopsy later revealed he died from stab wounds.
19x13 - Convinced To Kill?
August 27, 2023
Peter Van Sant examines the final chapter in the case against Jacob Nolan, who claims his cousin and psychiatrist, Dr. Pamela Buchbinder, brainwashed him into attempting to kill her ex-over, Dr. Michael Weiss, while in a custody battle for their son.
19x14 - The Daughters Who Disappeared
September 3, 2023
In 1997, four families from Texas and Oklahoma are crushed when their daughters go missing, and the cases go cold; decades later, the serial killer himself helps investigators solve those murders.
19x15 - The Idaho Student Murders
September 17, 2023
Criminology Ph.D. student Bryan Kohberger is charged with the murder of four University of Idaho students.
19x16 - The Kidnapping of Michelle and Breea Renee
September 10, 2023
Three masked gunmen broke into bank manager Michelle Renee's California home in November 2000 and forced her to rob her own bank to save her daughter Breea's life. Then, her abductor falsely claimed Michelle was in on the crime.
19x17 - Alisa Mathewson's Night Terrors
October 1, 2023
Alisa Mathewson suffered a 55-hour ordeal that almost cost her life at the hands of her estranged husband, Trevor Summers; she shares her harrowing experience of being kidnapped and sexually assaulted, with Peter Van Sant.
19x18 - Kassanndra's Secret
October 8, 2023
Three days after Kassanndra Cantrell's 2020 disappearance, police discover eerie surveillance footage of her attacker and soon realize the two were linked by a secret.
19x19 - What Angelina Saw
October 15, 2023
Angelina Fernandes, then 11-years-old, witnessed her mother, Stephanie, in distress at a bloody crime scene. She claimed she acted in self-defense when she fatally stabbed her fiancé Andy Wagner. But it would be up to a jury to decide what happened.
19x20 - A Stabbing in Colts Neck
October 22, 2023
Donna Ongsiako was alone in her New Jersey home when she heard a noise downstairs; she thought she forgot to let the cat in, so she opened the door; there, she suffered a horrific knife attack by an unusual suspect; Jim Axelrod reports.
19x21 - The Mysterious Death of Tiffiney Crawford
October 29, 2023
Tiffiney Crawford, a wife and mother, was found dead in her van with two bullet wounds to her head and a gun in her hand. Investigators' first impression was that it was a suicide, but they soon realised it might be a murder. David Begnaud reports.
19x22 - The Brighton Ax Murder
November 5, 2023
On Feb. 19, 1982, Jim Krauseneck tells police he found his wife Cathy dead in their bed with an axe in her head. For four decades, Cathy's murder remained unsolved, and it was dubbed one of the oldest and coldest murder cases in America -- until now.
19x23 - Lori Vallow Daybell: Guilty
November 12, 2023
In May 2023, an Idaho jury finds Lori Vallow Daybell guilty of murdering her two children, JJ Vallow and Tylee Ryan, and conspiring in the murder of her husband Chad Daybell's ex-wife, Tammy; Jonathan Vigliotti reports.
19x24 - Where is Diana Duve?
November 13, 2023
Diana Duve was last seen alive leaving a bar in Vero Beach, Florida, with her on-again, off-again boyfriend, Mike Jones. Her mother knew something was wrong when Diana didn't call her, something she did every day. Does Jones know more than he claims?
19x25 - Christy and Hilda's Last Dance
November 19, 2023
A night out for two friends in Los Angeles ends in tragedy after masked men dropped them off at separate hospitals. The young women died from drug overdoses, and police immediately suspected foul play. Jonathan Vigliotti investigates.
19x26 - The Night of the Idaho Student Murders
November 20, 2023
Criminology Ph.D. student Bryan Kohberger is charged with the murder of four University of Idaho students. Kaylee Goncalves, Ethan Chapin, Xana Kernodle and Madison Mogen were found dead in their off-campus home in Nov. 2022. Peter Van Sant reports.
19x27 - Remembering the Chowchilla Kidnapping
January 7, 2024
In August 2022, after 46 years, the last of three men convicted of kidnapping 26 children and their bus driver was paroled from a prison in California; survivors of that harrowing event share powerful and emotional interviews with David Begnaud.
19x28 - The Case of the Poison Cheesecake
February 4, 2024
A beauty stylist is almost murdered in 2016 by a client who comes to her home and poisons her with a piece of cheesecake; the motive doesn't make sense to police until they realize that the stylist and the client have an uncanny physical resemblance.

19x1 - A Man With a Past

19x2 - The COVID Cover-Up: Searching for Gretchen Anthony

19x3 - The Kidnapping of Schanda Handley

19x4 - The Snapchat Clue

19x5 - The Unsolvable Murder of Roxanne Wood

19x6 - Last Seen in Breckenridge

19x7 - The Case Against Michael Politte

19x8 - The Strange Death of Professor Shockley

19x9 - The Tree That Helped Solve a Murder

19x10 - The Shooting of Lauren Kanarek

19x11 - Death Hits Home: The Hargan Killings

19x12 - Melissa Turner's Closing Act

19x13 - Convinced To Kill?

19x14 - The Daughters Who Disappeared

19x15 - The Idaho Student Murders

19x16 - The Kidnapping of Michelle and Breea Renee

19x17 - Alisa Mathewson's Night Terrors

19x18 - Kassanndra's Secret

19x19 - What Angelina Saw

19x20 - A Stabbing in Colts Neck

19x21 - The Mysterious Death of Tiffiney Crawford

19x22 - The Brighton Ax Murder

19x23 - Lori Vallow Daybell: Guilty

19x24 - Where is Diana Duve?

19x25 - Christy and Hilda's Last Dance

19x26 - The Night of the Idaho Student Murders

19x27 - Remembering the Chowchilla Kidnapping

19x28 - The Case of the Poison Cheesecake

S1: Season 1

S2: Season 2

S3: Season 3

S4: Season 4

S5: Season 5

S6: Season 6

S7: Season 7

S8: Season 8

S9: Season 9

S10: Season 10

S11: Season 11

S12: Season 12

S13: Season 13

S14: Season 14

S15: Season 15

S16: Season 16

S17: Season 17

S18: Season 18

S19: Season 19

S20: Season 20