The New Detectives

A Virginia real-estate agent misses an appointment and is never seen again.

The home of a prominent couple becomes the unlikely scene of terrible bloodshed; a woman vanishes, leaving only a spray of blood.

A teenage runaway enters a deadly relationship with an older man; human skeletal remains turn up in a zoo.

A Russian woman is killed in her home; police search for a box whose contents may prove a man guilty of his wife's murder.

A woman accepts the job of a lifetime, then disappears; a college student is murdered on her way home from work.

A Virginia real-estate agent misses an appointment and is never seen again.

A teenage runaway enters a deadly relationship with an older man; human skeletal remains turn up in a zoo.

The home of a prominent couple becomes the unlikely scene of terrible bloodshed; a woman vanishes, leaving only a spray of blood.

A Russian woman is killed in her home; police search for a box whose contents may prove a man guilty of his wife's murder.

A 10-year-old girl disappears.

Police suspect someone was hunting illegally and fatally shot a man found dead in the front seat of his car.

Authorities suspect an ICU nurse of murdering patients.

Coroners try to identify a body that was burned in a car fire.

A woman is a victim of arsenic poisoning.

Co-workers are murdered in a bar, and police follow clues to find the killer.

Police search for a 22-year-old college student whose car was found abandoned outside Philadelphia; 10-year-old boy missing in Illinois.

A woman vanishes; a hotel's night clerk is brutally murdered.

Firefighters find a woman's charred body in the rubble of a house fire.

A rare technique to lift fingerprints off the victim's body helps to solve a murder case.

Rescue workers scramble to save a couple trapped in a crashed car.

An in-depth look at the science of death; the firsthand techniques and methodology used by coroner investigators.

Police search for a missing college-student; women are left for dead in the middle of the road.

A torso washes up on a river bank; a passer-by stumbles upon a human finger in a dumpster.

A fire hides a more horrific crime; a serial killer turns arsonist.

A woman and her daughter become lost at sea.

Forensic examiners uncover proof of murder when killers choose to hide their victims when committing crimes.

Plastic, industrial tie-wraps lead police to a killer.

An office party takes a violent turn.

The mysterious abduction of a young mother ends up a brutal homicide.

Forensic scientists must work to prove murder when the victim's body is missing or destroyed.

Police rely on forensic science to reveal murder victims' pasts and expose those guilty of committing crimes of passion.

Strangled prostitute; a stranger kills a woman in a van; a serial killer runs over his victims' bodies.

The most obvious suspect is not always guilty.

Killers hide the remains of their victims.

Some multiple-murderers seem to choose victims at random, without an apparent connection.

Everyday substances reveal hidden clues that break a homicide case.

Killers sometimes disguise their crimes as accidents.

Victims' families and friends can provide crucial information in investigations.

Screening bodies for toxins helps identify the true cause of death.

A murder victim's husband is accused of hiring co-conspirators to kill her.

The Vidocq Society provides investigators with fresh perspectives on cold cases.

Crime writers tell of the efforts of homicide investigators.

Investigators dispute the innocence of teens involved in murders.

Photographic evidence provides investigators with a permanent record of killers.

Forensic entomologists can learn when a murder was committed as well as the weapon used by studying the insects that nest inside a dead body.

Forensic artists turn witness statements into pictures as they try to recreate faces of killers.

DNA testing can vindicate those unjustly accused.

Blood evidence speaks for victims who cannot.

Forensic anthropologists use art and science to give faces to victims long after their bodies have been reduced to bones.

Diligence and technology help catch perpetrators who believe their crimes have been forgotten.

The Naval Criminal Investigative Service delves into murder cases within the Navy and Marine Corps.

Investigators and odontologists match bite marks with dental molds taken from suspects.

A suspect's shoe print matches one left at the crime scene; a bruise on a victim's body resembles the tread of a tire.

A suspicious-looking man buying a sports car turns out to be a killer; a chat room holds the key to a student's death; a couple kills three restaurant patrons.

A Florida girl's murder is similar to one in Indiana; DNA evidence forces a suspect to confess.

When clever killers try to cover their tracks, investigators turn to specially trained dogs to hound them.

When a woman is found dead after a date with a co-worker, analysis of her stomach contents leads to the man's arrest.

A parolee dodges prison by stealing the identity of a murder victim; a suspect conceals a crime by assuming the victim's identity.

Forensic science holds out the hope for justice when innocent victims are caught in a killer's cross hairs.

Today's technology allows scientists to more precisely study victims found in water.

Murderers think they're invincible but make critical mistakes while trying to outwit the police.

DNA evidence surfaces years after a murder; boy disappears on his way to class; horrid police actions.

Detectives use the remains of bones and teeth to identify murder victims.

Police unearth a landlord's gruesome crime after an elderly tenant disappears; police investigate a cold case and convict a serial killer.

Toxicologists link suspicious deaths to the lethal administration of poison after studying blood and tissue samples.

Investigators study small clues left at the crime scene, such as a paint chip, saliva from a cigarette and glass fragments.

Investigators use forensics to solve relationship tragedies.

Investigators use forensics to find missing people.

A sniper is brought to justice through ballistic tests; a bloody hand print leads to a suspect in a double homicide; a semen sample is tied to gunman.

Forensic investigators track down innocuous-seeming clues, such as dirty shoes or a tiny piece of plastic, placing a suspect at the crime scene.

A guilt-ridden police officer lies during an investigation; a man makes his wife's murder look like a car accident; a staged suicide.

Even in the wake of a catastrophic fire, investigators can cull important clues from charred rubble and bring the arsonist to justice.

The investigators and scientists of the Bureau of Alcohol, Tobacco and Firearms crack federal cases involving drugs, arson and weapons.

Investigators face an arduous challenge when pursuing a serial murderer keen on killing again and again.

Investigators use forensics to unearth a murder among blood relatives.

Sometimes blood relations lead to bloodshed.

Even though there is no statute of limitations on murder, a case becomes harder to solve over time as clues fade away.

Vengeful lovers.

Investigators employ forensic science to nab the coldblooded spouses who put an end to their marriages through murder.

Without a body, investigators must turn to science to prove a crime was committed and catch a killer.

Murderers who use poison to do the dirty deed are ultimately betrayed by their motives, especially when they murder for money.

When solving brutal crimes, the forensic entomologist and botanist study clues provided by nature.

Forensic investigators hunt down killers who choose their victims at random and artfully cover their tracks.

The smallest clues may assist in crime-solving.

Two of the top coroners in the United States talk about their cases, providing important insights into crime solving.

Crime writers combine perspectives of law enforcement and journalism.

Clues come from unlikely sources, including a beer bottle, deleted computer files and the cocoon of a black-fly larvae.

Drug trafficking spawns a violent and deadly criminal underground.

The role of the Texas Rangers, formed in the 1830s, continues to evolve with the application of medical jurisprudence.

When forensic scientists re-examine old, unsolved crimes, they sometimes find an overlooked clue or employ new technologies.

Poisoners rely on their victims' trust.

Female killers tend to choose less violent methods.

Detectives follow the electronic crumbs left behind by cell phones, surveillance cameras and ATMs to track criminals.

As cocky serial killers become increasingly careless, investigators harvest the clues that will ultimately put them away.

People who contract killings have air-tight alibis, but investigators use forensic science to explode so-called perfect alibis.

Murderers attempt to conceal evidence.

Chaotic or clean, a murder scene will yield clues left behind by the culprit, as was amply demonstrated in the case of the ``Night Stalker.``.

Murderers with obsessions of love, jealousy or power.

Microscopic pieces of evidence -- a fingerprint or a few fibers -- left at the crime scene can lead to the conviction of such killers as David Middleton and Gregory Kokal.

By testing DNA from saliva on a mailing label, investigators were able to track down the World Trade Center bomber.

Arson investigators gather physical evidence and mount undercover operations.

New forensic techniques assist investigators in solving cases and capturing criminals.

Modern techniques help to solve old cases.

Criminals' tools provide vital clues that can lead to their capture and prosecution.

Toxicologists examine blood and tissue to uncover unnatural deaths.

A seed pod may be enough to lead detectives to a killer or a victim's body.

Forensic investigators are able to use an eyelash, a carpet fiber, a hair strand or even cat fur to nab killers.

A body isn't always needed to solve a murder, as detectives can use a speck of blood or fingernail fragment to track a killer.

Psychologists discuss the behavior of serial killers while detectives talk about techniques used to catch them.

Ballistics experts work to determine whether a shooting is suicide or murder.

Forensic evidence plays a vital role in the O.J. Simpson criminal trial.

Flight data recorders give investigators vital clues about plane crashes.

Handwriting analysis may offer clues about the identity of the writer.

The massive investigation into the attempted murders of federal judges in 1989, beginning with the killing of Judge Robert Vance.

New techniques allow investigators to find clues among charred remains.

New computerization techniques aid in the fingerprinting process.

Many people each year disappear without a trace and are never seen again.

Forensic artists form a face from an unknown skull.

Forensic entomologists study the insects found on a corpse to determine the time and cause of death, providing crucial evidence.

Researchers investigate the importance of DNA analysis and its impact on the criminal justice system.

Photographs taken at a crime scene capture obscure clues and provide a permanent record.

An FBI profiler gets inside the mind of a serial killer by piecing together the evidence left at a crime scene.

Chemists at the Forensic Science Center at Lawrence Livermore National Laboratory develop new techniques to capture killers who use poisons.

The coroner's office in Miami investigates the death of an unidentified person when the body floats into a fishing boat.

Forensic anthropologists identify the remains of soldiers through DNA tissue matching.

A fire hides a more horrific crime; a serial killer turns arsonist.

Forensic examiners uncover proof of murder when killers choose to hide their victims when committing crimes.

Co-workers are murdered in a bar, and police follow clues to find the killer.

An office party takes a violent turn.

Coroners try to identify a body that was burned in a car fire.

Strangled prostitute; a stranger kills a woman in a van; a serial killer runs over his victims' bodies.

Rescue workers scramble to save a couple trapped in a crashed car.

Police search for a missing college-student; women are left for dead in the middle of the road.

An in-depth look at the science of death; the firsthand techniques and methodology used by coroner investigators.

A woman and her daughter become lost at sea.

The most obvious suspect is not always guilty.

Killers hide the remains of their victims.

Some multiple-murderers seem to choose victims at random, without an apparent connection.

Forensic entomologists can learn when a murder was committed as well as the weapon used by studying the insects that nest inside a dead body.

Everyday substances reveal hidden clues that break a homicide case.

Police suspect someone was hunting illegally and fatally shot a man found dead in the front seat of his car.

Authorities suspect an ICU nurse of murdering patients.

Firefighters find a woman's charred body in the rubble of a house fire.

Killers sometimes disguise their crimes as accidents.

Victims' families and friends can provide crucial information in investigations.

Police search for a 22-year-old college student whose car was found abandoned outside Philadelphia; 10-year-old boy missing in Illinois.

A woman vanishes; a hotel's night clerk is brutally murdered.

A 10-year-old girl disappears.

A rare technique to lift fingerprints off the victim's body helps to solve a murder case.

A murder victim's husband is accused of hiring co-conspirators to kill her.

Screening bodies for toxins helps identify the true cause of death.

The Vidocq Society provides investigators with fresh perspectives on cold cases.

A torso washes up on a river bank; a passer-by stumbles upon a human finger in a dumpster.

Police rely on forensic science to reveal murder victims' pasts and expose those guilty of committing crimes of passion.

Plastic, industrial tie-wraps lead police to a killer.

Forensic scientists must work to prove murder when the victim's body is missing or destroyed.

A woman is a victim of arsenic poisoning.

Forensic artists turn witness statements into pictures as they try to recreate faces of killers.

Investigators dispute the innocence of teens involved in murders.

DNA testing can vindicate those unjustly accused.

Photographic evidence provides investigators with a permanent record of killers.

The mysterious abduction of a young mother ends up a brutal homicide.

Forensic anthropologists identify the remains of soldiers through DNA tissue matching.

A woman accepts the job of a lifetime, then disappears; a college student is murdered on her way home from work.

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Crime writers tell of the efforts of homicide investigators.