Kenneth McDuff: FBI Investigates America's Most Sadistic Serial Killer

Washington, D.C. became America's murder capital as a ruthless cop killer stalked officers in 1995. Discover the true story behind the city’s most harrowing manhunt. Journey into the dark days when violent crime and gang wars overwhelmed the nation's capital, leaving police outnumbered, outgunned, and even targeted themselves. This gripping crime documentary reveals how a wave of shootings—including the near-fatal ambush of Officer Vance Warren and the assassinations of Officer Eric Hayes and John Novobilski—unleashed panic in law enforcement ranks. Follow investigators as they race to gather forensic evidence, track down the elusive suspect, and rely on the brave testimony of a battered woman who risked everything to break the case. Top FBI agents and D.C. detectives recount each chilling step of the investigation, from tense stakeouts to deadly shootouts and heartbreaking losses. Using advanced forensics, witness descriptions, and the relentless determination of those tasked to protect and serve, they finally close in on the killer. But not without sacrifice—the story honors the fallen heroes whose names are etched on the National Law Enforcement Officers Memorial. Perfect for fans of

Step inside the real-life FBI Take Downs: a chilling story of hostage bank robberies, daring manhunts, and the relentless pursuit of America’s most wanted. In this gripping episode, you’ll witness the harrowing true accounts of a string of meticulously planned bank extortions that terrorized Tennessee families. Discover how mastermind Douglas Dagle and his crew executed home invasions, strapped victims to fake bombs, and forced bank managers to rob their own branches. Hear from the agents who risked everything as they raced against the clock, unraveling a web of crime that spanned multiple cities and left a trail of trauma in its wake. If you’re fascinated by true crime, FBI manhunts, and the dark psychology of criminal masterminds, this episode of FBI Take Downs will keep you on the edge of your seat.

In the summer of 1984, Northern California becomes the centre of a growing wave of disappearances that leaves families, neighbours, and entire households missing without explanation. What begins as scattered missing person reports slowly connects into something far more disturbing when investigators trace a pattern involving newspaper ads and encounters with two men: Leonard Lake and Charles Ng. A routine police response to a shoplifting incident unexpectedly exposes illegal weapons and a suspect who soon takes his own life using cyanide, cutting short an early opportunity to uncover the full truth. That moment becomes the turning point in an investigation that stretches across years and eventually leads authorities to a remote cabin in Calaveras County.

A respected dentist. A city on edge. And a trail of bodies stretching across decades. This chilling FBI investigation peels back the mask of Glennon Engelman, the St. Louis “deadly dentist” tied to car bombs, staged accidents, and cold-blooded executions for cash. From a Madison County farmhouse massacre to a body staged at a seedy motel, investigators chase a phantom who always seems one step ahead. A car bomb shatters the quiet south side, but a misfired device from months earlier reveals an unexpected link. An ex-wife’s terrified testimony opens locked doors: an alleged quarry “accident,” a drag-strip blast, and a suspicious 1958 killing that never sat right. Insurance windfalls, forged signatures, a bogus confession, and a killer’s arrogance converge as agents connect dots others missed. How did a mediocre dentist outmaneuver cops for years? What tiny forensic match finally cracks the case? And why did so many people closest to him keep paying with their lives? Watch the full story to see how investigators exposed the method behind the murders and the motive that never changes.

In 1988, new light was shed on the mysterious death of a South Carolina farmer when a criminal confessed that two prominent community members hired him to commit murder.

Small-town family man Andie Gasper is murdered behind a shopping center in broad daylight, and the tragic case goes unsolved for 15 years. FBI agents are brought into the cold case, and uncover a twisted tale of greed and broken promises.