Anatomy of Murder

For years, Mark Koster was presumed gone—declared dead without a body ever being found. But when his remains surface inside his own home, investigators must unravel how a killer hid in plain sight and how one confession finally exposed the truth behind a death that went unnoticed for years.

A grandmother visiting from Haiti, a young mother, and two small children are found brutally killed in a quiet South Florida neighborhood. With no forced entry and few answers, detectives must untangle what happened inside the Altidor family home and why justice has remained out of reach for decades.

On New Year’s Day 2013, the quiet city of Schenectady, New York, was shaken by the brutal murder of 82-year-old retired nun Mary Greco. Investigators uncover how a seemingly small forensic detail inside her pristine apartment led to the identification of a killer—and justice for a woman remembered for her faith, kindness, and lifelong service to others.

When a former high school football star is found murdered outside his home, investigators had to wonder if the game he loved had something to do with the crime.

When a young woman doesn’t show for a family event, her family suspects the worst. A tangled web left everyone guessing her fate. Detectives would not give up until they uncovered the truth.

A local reporter disappears. Foul play is soon suspected. Was it his work that motivated the brutal crime or was it something else? A father’s phone call sets the investigation into high gear in a way you’ll never expect.

A house fire takes the life of a 17-year-old. Investigators quickly discover it was intentionally set, but it would take years before they learned anything more.

One is found dead, and the other is missing. Police would need to untangle their lives before uncovering the truth about what happened to them both.

In this special re-release of the very first Anatomy of Murder episode, Scott and Anna return to the story that started it all—the 1970 murder of Loretta Jones. When her daughter Heidi grew up, she refused to let the case fade away, leading to a shocking confession nearly half a century later.

A mass murder strikes at the heart of a community when the employees of its local paper are the targets. The preplanning and reasoning propelling the horrific attack is mind-boggling.

When a healthy mom becomes suddenly ill and dies, doctors and family are baffled. Foul play is soon suspected, but the biggest question would be, could they prove it?

A woman claims she had a dream that she hurt someone. After a body is found, investigators needed to uncover: was this ‘dream’ a figment of imagination or a confession?

A young woman is shot and killed at work, in a local home improvement store. The shooter’s unlikely accomplice would prove pivotal to this crime.

Two prosecutors are gunned down within a short span. A tip comes in that there will be more bloodshed. The entire justice system was on edge in a case striking at its heart. Can police stop this murderer before he strikes again?

Two young teens are found dead in their home. One family is desperate for answers. Another has to confront an unthinkable truth.

911 is called to report a woman is found unresponsive in her bathtub. Accident or murder? Her family suspects foul play and will not give up until they receive justice.

A woman disappears as she navigates a recent divorce. Did she willingly disappear, or was it foul play? And if so, by whom? It would be money and checks that helped solve the mystery.

A woman knocks on the door, and within minutes, the man she asked for is outside dead. His family wanted answers. Detectives put the pieces together one by one to figure out this complex case.

A man’s body is found in the park. What happened would first center on a car. The end would involve murder.

A young man is found murdered in his home. Several hours later, a woman is found dead only blocks away. Coincidence or the work of one killer? Coins would help investigators find the answer.

A bomb explodes in a day spa, destroying the building, killing its owner, and seriously injuring others. Would the blast be the work of a terrorist act or something else? Unraveling the mystery became a puzzle that was solved one piece at a time

In a small Indiana town, investigators connect the dots in the murders of young women. But sometimes, shocking coincidences are nothing more than that.

A young college student is murdered, sending shockwaves through the community. But another murder, eerily similar, makes investigators question if a serial killer is loose in this college community.

A murder spree leaves 5 dead—once the killer was identified, would the motive be revealed? What he said shocked everyone.

A man on a first date is soon found dead in the street. The story behind the who and why will be baffling and up the enormity of the tragedy.

This part 2 is the dramatic conclusion to a case that took two lives and almost 3. It broke all family boundaries. A prosecutor was left to unravel the pieces.

A husband is found dead in his bed. Items found in the home would help unwind a lethal trail and forever fracture a family.

A young career woman is discovered dead after a welfare check. The unraveling of what happened and who did it would strike at the heart of it all.

A retiree disappears, and his family soon suspects foul play. A boat and an anchor might be the things that break the case.

Murder, manipulation, and a calculated plan. Untangling the pieces would be the challenge for investigators.

A jewelry salesman is found murdered in his car. Would the motive be personal, business, or random? Detectives were determined to find out.

A ransacked apartment and brutal assault left a young woman dead. One pane of glass would help solve the case- but it would be anything but quick.

A man is shot at his doorway as he comes home from work. Tracking the truth would take the detective down an unexpected, twisty trail.

The search for a missing young mom would take police into the world of hot air balloons and bees. Once her body was found, those same connections would be pivotal to the investigation.

A wife calls police after finding her husband dead inside their home. The couples' security system leads investigators to answers.

A young woman disappears as she heads in to work. Unraveling what happened to her would take skilled detectives and an unexpected piece of video.

The murder of a young father soon uncovers a tangled web of deceit. A second murder is discovered and just may be linked to the first.

A father is shot during a home invasion. Was it random or did he know his killer? Investigators would need to untangle a twisted web to find the answers.

A woman is found dead in her home. A syringe found nearby would lead to answers, and her death being ruled a homicide.

A brutal crime scene… three lives lost… and forensic evidence in question… Here’s how a short trip to Florida changed a woman’s life forever.

An 18-year-old disappears and is found brutally murdered. His mother discovers the first clue that helps police find her son, and then identify his killers.

A 13-year-old teen disappears and her body is soon found in nearby woods. An interaction at a yogurt shop would set police on the path to finding her killer.

A woman is gunned down outside her home. Jealousy and greed were suspected motives, but it would take many years, and a prosecutor willing to take a risk, to prove it.

A photograph is posted online. It would set off an investigation into a brutal homicide, photographs of which were being broadcast online.

A seven-month-old baby dies while being cared for by a family friend. The question becomes, was this an accident or a crime? And if a crime, who is responsible?

The day a school's perfect attendance award was set to be given, instead ended in tragedy. This case is about a terrible murder, unbreakable determination and justice long delayed.

A horrific homicide of a mom-to-be and the abduction of her unborn child leave investigators baffled. The clock was ticking to find the newborn and to identify the killer.

After a young woman is found dead, police are quick to identify her killer. Gathering the proof wasn't quite as fast. A phone, a camera, and a police informant would prove pivotal to this case.

A young mom is brutally murdered. Her husband is suspected, although he was away on business at the time of the crime. Would shoes and other physical clues lead investigators to the truth?

Three members of one family are found murdered in their home. The internet would be the centerpiece for investigators tasked with solving this brutal crime.

A woman leaves work and would never be seen alive again. For decades, her murder remained a mystery. Patience paid off, and over 40 years later, answers were finally delivered to her family.

A by-chance exchange leads to murder. What led to an innocent man being gunned down was both baffling and infuriating.

A teen disappears and social media leads police to her last known contact. Tracking him down would only be the beginning of unwinding what happened.

The 1979 homicide of one young woman would be linked to additional brutal crimes decades later. But justice for the crime would prove elusive.

A raw look inside an unsolved case. Helping a family get answers would be the gift they need this new year.

A social media blogger is tied up in her home and her husband is abducted, and later found dead. Police soon have a web of suspects, and learn that appearances and the truth can be far from the same.

A young woman left the law library and was never seen alive again. It would take years of persistence and advancements in technology to finally get the answers her family had waited decades to hear.

After her husband's murder, his wife has to grapple with multiple revelations.

Two young women are found murdered. Paint on garage windows would prove an unlikely clue.

An online feud is examined closely after a young couple are murdered. Would the CIA be the key?

A woman checking on a Hawaii vacation home is brutally attacked and murdered. Her young daughter would be the key in helping find her killers.

The murder of a young mom in her home goes cold, leaving her family wanting answers. An unexpected visitor to a local precinct decades later would open the doors needed for her family to finally learn the truth.

A woman dead. No quick answers. Suspicions and a car, but not much more. Information about an envelope just might lead detectives to the answers that were initially elusive.

A frantic 911 call leads police to a car in a ditch, and a woman dead inside. Her husband relays a harrowing tale. The car itself would help police unravel a perplexing mystery.

An unexpected phone call breathes life into the decade-old murder investigation of a 21-year-old. Two investigators are determined to get answers for her family and get them their day in court.

A musician is murdered. A new romantic partner and her ex quickly become suspects. A farm and a fire lead to a gruesome discovery no one expected.

A young farmer disappears. His family is convinced that he has met with foul play. A video captured on a cellphone would prove eye-opening for investigators.

Nearly 25 years have passed since that fateful day in New York, and while the major events of the day will always be remembered, there was one more life lost that day that we also cannot forget. This episode may sound familiar, but it's because justice has yet to be served... The terror attacks killed 2,753 people in New York, and while those deaths are all murders, they are not classified that way. There was, however, one death that happened in New York City on 9/11 that was officially ruled a homicide... and we should never forget it.

A 16-year-old's body is discovered weeks after she disappeared. Police soon suspect who is responsible, but proving it would not come as quickly.

A 16-year-old disappears after leaving for school. The path to finding out what happened to her would be long, and dark.

A mother and young son are found dead in their apartment. Local law enforcement hit wall after wall, for decades. New technology and a family tree led to the solve they'd been waiting for.

Two missing children quickly lead to an investigation into multiple murders, including theirs. The world was watching as detectives pieced together this deeply, disturbing case.

A missing teen leads to a group of friends. When they speak with police, no one's story is the same. It will be up to law enforcement to unravel the brutal truth.

A mother and daughter are found dead in their home. A surprise phone call to detectives would lead to who did this, and why.

A web of relationships led to murder. The question of who was the victim and who was the perpetrator loomed large. Muddy footprints would help untangle the truth.

A father is gunned down in his garage. Investigators unlocked answers quickly, but untangling the full truth proved trickier.

A house fire uncovers a body, soon identified as the homeowner. Was it the fire that killed him or was the fire a cover for an even more terrible crime?

A retiree dies by poison and the circumstances raise flags from the start. But gathering the evidence to prosecute would become the challenge, and result in a tale expected by no one.

Decades after a woman is murdered in her car, police receive an out of the blue letter about the crime. It led down an unexpected road that ultimately solved the case.

A local actress is murdered in her home, leaving her family reeling. A trio of suspects would be investigated before one was revealed as the killer.

A woman’s murder went unsolved for years. An anonymous letter sent to police gave chilling details of the crime, but would it actually solve the case?

A chilling discovery and call to police led to a murder that shocks the conscience. Recorded statements became critical evidence at trial.

A mom disappears while her children sleep in their beds. A piece of missing couch cushion would prove pivotal in the investigation, decades after the crime.

A retiree is found murdered in his Florida home. A sole beer can and a daily planner would be the best clues to finding his killer. It was a mystery that would take many years to solve.

A single mom goes missing after a night out with friends. A momentary call placed to 911 proved to be the first key, that would eventually help unlock what happened.

Family members are suspected of foul play when a young man goes missing. The tangled web of complex relationships would not be easy for investigators to unravel.

A turquoise bodysuit and a notebook entry became key in finding the killer responsible for two brutal and bizarre murders from decades before.

Human remains found in a field lead an investigator on a decades-long quest. He was determined to uncover whose remains were found, and how they had gotten there.

A successful entrepreneur and mother is killed in bed while sleeping. Untangling the web of who committed the crime started with a car.

A home invasion leads to the murder of a young mother and entrepreneur. With a community up in arms, the recovery of a car taken from the home might provide some of the answers needed.

A woman dies and the question soon becomes: murder or death by suicide? It’s a case with twists and turns that would take years to unravel.

A 60-year-old murder lands in the lap of a brand-new homicide detective. The journey to its solve would become her career challenge and personal mission.

When a woman disappears, the search soon turns into a homicide investigation. Who was responsible and the motive for the crime caught everyone by surprise.

A jogger disappears and all eyes turn to her Iowa town as they search to find her. After her body is found, a car would prove to be key in identifying her killer.

A motel room shows signs of violence - but there’s no victim inside to prove that any crime had actually occurred. A body is soon discovered and linked back to the room. Police now need the final piece: who committed the crime.

Police are called to a couple’s home after they report an active break in. The wife lay dead and her husband shot. An unlikely motive leads police to the killer.

A young couple are bound and killed and the question of ‘why’ and ‘by who’ swirled. The likely answer to the ‘why’ could never have been expected.

A woman disappears after a night out with friends. A car wash would be key to finding her killer. But the mystery still remained: where was Christina’s body?

A young mom goes missing and after her body is found, police are left with more questions than answers. Disinfectant wipes would prove pivotal in solving the case.