Signed in Blood: The Letters Police Ignored

Florencia Aranguren: the crime on the beach that exposed a killer who never served his sentence

The dog that accused the killer of Florencia: The murder of Florencia Aranguren in Búzios, Brazil A recently arrived Argentine woman in Brazil disappears four days after landing. Her dog stays by her body, covered in blood, on the beach. The impossible: during the court hearing, the animal's reaction against the suspect was presented as identification evidence. In this episode, we explore how a man sentenced to 15 years for sexual abuse was still at large when he murdered Florencia; how security cameras, defensive scratches, and blood-stained clothing converge in 48 hours; and why a traumatized dog became a key witness in a court of justice. Victim: Florencia Aranguren, 31 years old, Argentine artist and trapeze artist Date: December 6, 2023 Location: José Gonçalves Beach, Búzios, Rio de Janeiro, Brazil Status: Pending jury trial; preventive detention - Carlos José de França had an active sentence of 15 years (2009) for robbery, assault, and sexual abuse of a minor, but was circulating in a semi-open regime without supervision. - Cameras capture Florencia entering a curve with dense vegetation; 20 minutes later, De França passes by on a bicycle wearing a cap; no one else is seen in the area. - Female underwear with blood stains was found in his home during the search; forensic analysis could reveal previous victims. - De França bathed immediately after the crime, but scratches on his body and defensive wounds on Florencia's hands contradict his denial in court. Florencia Aranguren, Búzios femicide 2023, forensic investigation, murder Brazil, dog reaction evidence, sexual abuse history, Argentine justice, unsolved crime, feminist poster, autopsy, judicial truth, true crime Spanish If you want to listen to this podcast ad-free and have access to premium episodes, we invite you to try our subscription with a 14-day free trial at obomedia.com. © 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and associated materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use in whole or in part is prohibited without prior written authorization from OBOMEDIA. For permissions, licenses, and business inquiries, write to: business@obomedia.com [business@obomedia.com].

Signed in Blood: The Letters Police Ignored

Killer Signs His Murders With Letters Police File Away as Pranks: The Serial Homicides of Wolfgang Abel and Marco Furlán November 1980. A letter arrives at an Italian newspaper signed "Ludwig" describing three unsolved murders with classified details no one outside the crimes could know. The police read it, note the impossible accuracy, and dismiss it as a hoax. Over the next four years, Ludwig will claim thirteen more victims across four countries-sending physical evidence, technical specifications, and architectural diagrams with each killing. In this investigation, we uncover how two brilliant university students built their own cosmology of murder while operating completely invisible to authorities who received direct confessions in the mail. We explore the contradiction between perfect forensic correspondence and institutional blindness, the targeting of marginalized victims invisible to investigators, and why it took seven years to connect letters that authenticated every detail of violent acts. Victim: Wolfgang Abel, Marco Furlán (perpetrators); Multiple victims including Guerino Spinelli, Luciano Stefanato, Claudio Costa, Alice María Pareta, Luca Martinotti, Mario Lovato, Giovanni Batista Pigato, Father Armando Bisón, and victims of the Heros cinema fire Date: 1977-1984 Location: Verona, Padua, Venice, Vicenza, Trento, Milan, Italy; Amsterdam; Munich Status: Convicted, escaped, recaptured - Four Molotov cocktails thrown at a sleeping man's car in 1977, detail confirmed only in a letter the police filed away as a prank - Hammer and axe murders described with brand names, colors, and weights before forensic analysis could verify them - A fire at a Milan cinema set using a fuel mechanism so specific the perpetrator's letter matched technical blueprints the police had not released - Two young men in Nazi costumes caught at a nightclub the same night investigators finally connected the correspondence to the crimes Wolfgang Abel, Marco Furlán, Guerino Spinelli, Luciano Stefanato, Claudio Costa, serial killers, unsolved murders, Italian true crime, investigation failure, homicide investigation, criminal minds, forensic evidence, true crime English To listen to this podcast ad-free and access premium episodes, try our subscription with a 14-day free trial at obomedia.com. © 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and related materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, without prior written permission from OBOMEDIA is prohibited. For permissions, licensing, and business inquiries: business@obomedia.com.

Jack the Stripper: The Signature Scotland Yard Never Solved

System Releases Him Thirteen Months Before He Murders Three: The serial murders of Nicole Paterson, Margaret Josephine Mack, and Mersina Halvagis September 1996. A man with sixteen documented sexual assault convictions walks free from a Victorian prison. Psychiatric records flag him as high-risk. No one stops him. Thirteen months later, a woman is found dead with injuries Australian forensic science had never documented before. In this investigation, we examine how Peter Dupas moved through decades of institutional cycles-arrested, convicted, released, reoffended-each time the system processing him without breaking the pattern. We reconstruct the three murders that finally caught him, the forensic signatures that linked them, and the central question: why did a system with complete knowledge of his escalating violence repeatedly set him free? Victim: Nicole Paterson, Margaret Josephine Mack, Mersina Halvagis Location: Melbourne, Victoria, Australia Date: 1997-1999 Status: Convicted; three life sentences - A man released in September 1996 with sixteen prior sexual assault convictions and documented psychiatric warnings against release - A forensic signature so specific-mutilation of breasts and surgical placement-that it appeared in case files as unprecedented in Victorian records - Investigators discovered he had called Nicole Paterson's phone fifteen times in forty days while denying ever knowing her - His grandfather's grave was 128 meters from Mersina Halvagis's body, and he rented a hotel directly across from the cemetery where she was found Peter Dupas, Nicole Paterson, Margaret Josephine Mack, Mersina Halvagis, Melbourne Victoria Australia, 1997, homicide, serial killer, forensic signature, criminal justice system failure, recidivism, true crime English To listen to this podcast ad-free and access premium episodes, try our subscription with a 14-day free trial at obomedia.com. © 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and related materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, without prior written permission from OBOMEDIA is prohibited. For permissions, licensing, and business inquiries: business@obomedia.com [business@obomedia.com].

Doris Adriana Niño: the fan who died in the orbit of a star and was buried without a name

The carpet that disappeared: Diomedes and the buried secret: The homicide of Doris Adriana Niño In the early morning of May 15, 1997, a man in a yellow sweater throws a body wrapped in a raincoat into a thicket on the outskirts of Bogotá. Three farmers see everything. But when the police arrive, no one asks about the carpet that disappeared from the apartment where it all happened. In this episode, we explore the contradictions that condemned singer Diomedes Díaz: a death that changed causes between autopsies, fluids from three men found on the corpse, and a note with the exact address kept in the pocket of an engineer who loved an idol too much. How did six years in prison turn into three and a half years of freedom? Victim: Doris Adriana Niño Date: May 14-15, 1997 Location: Bogotá, Colombia Status: Closed case with reduced sentence - Mechanical asphyxia confirmed in second autopsy after two years; first autopsy concluded overdose. - Fluids from three men found on the corpse; post-mortem abuse never formally investigated. - Carpet from the apartment replaced without authorization from the record label before forensic inspection. - Diomedes released after 3 years and 7 months of a 6 and a half year sentence; died in 2013 as a popular idol. Doris Adriana Niño, Bogotá premeditated homicide 1997, murder, mechanical asphyxia, investigation, cover-up, impunity, cartel, criminal minds, Spanish true crime If you want to listen to this podcast ad-free and have access to premium episodes, we invite you to try our subscription with a 14-day free trial at obomedia.com. © 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and associated materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use in whole or in part is prohibited without prior written authorization from OBOMEDIA. For permissions, licenses, and business inquiries, write to: business@obomedia.com [business@obomedia.com].

The Kabukicho case: obsessive love, violence, and a criminal turned social phenomenon

No body, no forgiveness: the murder that Tucumán could not solve: The disappearance and murder of Beatriz Argañarás On July 31, 2006, a 45-year-old teacher leaves her home for work and disappears without a trace. Blood splatters in a freshly painted apartment, a car filled with fuel, and text messages would be enough to convict two women of murder, but the body would never be found. How do you prove a perfect crime when the victim remains missing? In this episode, we explore the forensic investigation that faced impossible contradictions: alibis that didn’t add up, injuries on hands that spoke of a struggle, and a fuel record that placed the accused exactly on the route to El Cadillal. Susana Acosta and Nélida Fernández were sentenced to twenty years, but decades later they were granted parole without revealing Beatriz's whereabouts, leaving the most disturbing question of Tucumán justice open. Victim: Beatriz Argañarás Date: July 31, 2006 Location: San Miguel de Tucumán, Argentina Status: Disappearance without a body; convicted on parole - The apartment was painted and fumigated between the first and second searches, but Beatriz's blood remained on the bathroom frame, the wall, and the plumbing. - Susana and Nélida filled up with gas twice on the day of the crime; the exact amount matched the trip from the apartment to El Cadillal and back. - Luis Fernández's housekeeper testified that she washed one of his shirts with blood stains on the same July 31. - Both convicted women married in prison as a pact of silence and obtained parole in 2023 and 2024 without revealing where the body is. Beatriz Argañarás, Tucumán 2006, murder without a body, mystery, forensic investigation, Argentine justice, enforced disappearance, criminal minds, kidnapping, Spanish true crime If you want to listen to this podcast ad-free and have access to premium episodes, we invite you to try our subscription with a 14-day free trial at obomedia.com. © 2026 OBOMEDIA. All rights reserved. This episode and its content (audio, text, and associated materials) are the exclusive property of OBOMEDIA and are protected by applicable copyright laws. Reproduction, distribution, editing, or commercial use, in whole or in part, is prohibited without prior written authorization from OBOMEDIA. For permissions, licenses, and business inquiries, write to: business@obomedia.com [business@obomedia.com].