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Wondery | Treefort Media

When a shocking crime occurs, people ask “Why?” Was it about power, ego, or revenge? On Killer Psyche, retired FBI agent Candice DeLong draws on her decades of experience to reveal why these murderers and criminals committed these heinous acts. She will reveal fascinating new details about what drove these people, including cases she was close to. Candice will share specific psychological methods and profiling techniques that experts use to understand the deepest part of the most complex, fascinating, and twisted minds, from the Unabomber to Alex Murdaugh to Mary Bell. Winner of the 2025 Bronze Signal Award for True Crime podcasts.

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Join Wondery+ in the Wondery App, Apple Podcasts, or Spotify. Start your free trial by visiting http://link.wondery.com/KillerPsycheLinks now.

Killer Psyche

Retired FBI agent and criminal profiler Candice DeLong examines the heartbreaking murder-suicide of Phil and Brynn Hartman, whose seemingly charmed life masked a growing storm. Within their home, Brynn battled addiction, insecurity and a fragile sense of identity that increasingly threatened the stability of their marriage. As tensions mounted, emotional volatility turned dangerous, culminating in a night of irreversible violence. Candice explores the psychological fractures that led Brynn to kill the man she loved, and how their relationship became a chilling example of what can happen when untreated turmoil meets opportunity for harm.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Brynn Hartman & the Murder of Phil Hartman

Retired FBI agent and criminal profiler Candice DeLong unravels the horrifying case of Gwendolyn Graham and Cathy Wood, also known as the “Lethal Lovers.” Inside the walls of a Michigan nursing home, their romance became intertwined with violence, as the pair used murder as a way to deepen their emotional and sexual bond. Over several months, vulnerable patients became targets in a shared, intimate thrill – a lethal fusion of affection, manipulation, and desire. Candice explores how their toxic dependency escalated into a series of killings, and how a relationship built on control, obsession, and the pursuit of shared gratification spiraled into one of the most disturbing partnerships in criminal history.

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Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Gwendolyn Graham & Cathy Wood: The Lethal Lovers

Retired FBI agent and criminal profiler Candice DeLong examines the chilling case of Elliot Rodger, the self-described “supreme gentleman” whose violent resentment toward women exploded into a deadly rampage in Isla Vista, California, in 2014. While frequenting self-validating incel forums online, offline, Rodger struggled with social rejection, mental-health crises, and a growing obsession with punishing the people he believed had wronged him. By the time the violence erupted, six people were dead and fourteen more injured. Candice explores how alienation, narcissism, and extremist online communities converged to create a perfect storm; and how Rodger’s attack marked a turning point in understanding grievance-based violence, misogynistic extremism, and the psychology behind modern lone-actor killers.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Elliot Rodger: The Killer Incel

Retired FBI agent and criminal profiler Candice DeLong examines the horrifying case of Katherine Knight, the first woman in Australian history to be sentenced to life in prison without parole. In 2000, Knight brutally murdered her partner, John Price, in a crime so gruesome it shocked the nation. Known for her violent temper and turbulent relationships, Knight’s life was marked by jealousy, control, and explosive rage. When Price tried to leave her, that rage reached its deadly peak. Candice explores how deep-seated trauma and a pattern of escalating violence culminated in one of Australia’s most chilling crimes.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Katherine Knight: Australia's "Cannibal Killer"

Retired FBI agent and criminal profiler Candice DeLong examines the shocking case of Ali Abulaban, known online as “JinnKid,” and later, as ""The TikTok Murderer."" In October 2021, the social media influencer brutally killed his estranged wife, Ana, and her friend, Ray Barron, inside a San Diego high-rise apartment. At first, Abulaban appeared to have it all: fame, followers and a picture-perfect family. But beneath the curated clips and comedy skits was a man consumed by jealousy, rage and a desperate need for validation. His obsession with his online persona was so overpowering that he secretly recorded his wife- and even captured the sound of her final moments. Candice explores how ego, fame and control collided in a digital age tragedy that blurred the line between reality and performance with deadly consequences.

Be the first to know about Wondery’s newest podcasts, curated recommendations, and more! Sign up now at https://wondery.fm/wonderynewsletter

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Ali Abulaban: The TikTok Murderer

Retired FBI agent and criminal profiler Candice DeLong explores the disturbing case of Ed Kemper, known as “The Co-Ed Killer.” In the early 1970s, young women began vanishing from the streets of Northern California. When the truth finally came to light, it revealed a killer unlike any other: a towering, soft-spoken man whose charm and intellect hid monstrous impulses. By the time he was caught, eight people – including his own mother – were dead. Only later would investigators learn that Kemper’s knack for violence began years earlier. Candice examines how deep resentment, emotional isolation, and a fractured relationship with his mother fueled one of the most chilling killing sprees of the decade, and how his later cooperation with the FBI helped shape modern criminal profiling.

Be the first to know about Wondery’s newest podcasts, curated recommendations, and more! Sign up now at https://wondery.fm/wonderynewsletter

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Ed Kemper: The Co-Ed Killer

Retired FBI agent and criminal profiler Candice DeLong dives into the infamous case of Bryan Kohberger. In November 2022, four University of Idaho students were brutally murdered in their off-campus home, kicking off a six-week manhunt that captivated the world. When investigators traced DNA evidence and digital data back to Kohberger, a criminology PhD student studying the psychology of killers, the story took an even darker turn. Candice examines how Kohberger’s lifelong social isolation, feelings of rejection, and status as an outcast may have fueled a deep psychological need for power and control, and how his fascination with criminal minds may have ultimately led him to become one himself.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Bryan Kohberger: A Definitive Deep Dive

Retired FBI agent and criminal profiler Candice DeLong dives into the murders of 14 year-old Libby German and 13 year-old Abigail Williams. After five years, Richard Allen has been arrested for the "delphi murders." Candice also speaks with journalist Susan Hendrix, who covered the case and has written a new book about it entitled, "Down the Hill: My Descent into the Double Murder in Delphi."

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Encore: Down the Hill: the Delphi Murders

In part 2 of this 2 part episode, former FBI agent and criminal profiler Candice DeLong discusses how she joined the FBI and started as a profiler. 

Be the first to know about Wondery’s newest podcasts, curated recommendations, and more! Sign up now at https://wondery.fm/wonderynewsletter

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Encore: The Path to Profiling: Part II

In part 1 of this 2 part episode, former FBI agent and criminal profiler Candice DeLong discusses how she joined the FBI and started as a profiler. She revisits some of the cases that impacted her early career, and the lessons she's learned along the way.

Be the first to know about Wondery’s newest podcasts, curated recommendations, and more! Sign up now at https://wondery.fm/wonderynewsletter

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Encore: The Path to Profiling: Part I

In the second half of this two-part episode, retired FBI agent and criminal profiler Candice DeLong speaks with Dr. Katherine Ramsland, a forensic psychologist and one of the world’s foremost experts on serial killers. In her book, Confession of a Serial Killer: The Untold Story of Dennis Rader, the BTK Killer, Katherine details her years-long correspondence with Rader and what she learned about his twisted psyche. Candice and Katherine discuss the motivations behind Rader’s crimes and how his dark fantasies escalated to murder. Confession of a Serial Killer is available at https://www.amazon.com/Confession-Serial-Killer-Untold-Dennis/dp/1611688418.

Need more Killer Psyche? With Wondery+, enjoy exclusive episodes, early access to new ones, and they’re always ad-free. Start your free trial in the Wondery App or visit wondery.app.link/TI5l5KzpDLb now.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Dennis Rader - BTK PT II: A Conversation with Katherine Ramsland

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