In 2010, Amber Jackson, 57, disappears from her Kauai, Hawaii, home, only to be found days later deep in the wilderness and bludgeoned to death.

In 2013, Amber Bass, 22, is gunned down in her driveway following a night out with friends.

Twenty-eight-year-old Sharon Robinson is found murdered near New Orleans; detectives suspect her abusive police officer boyfriend.

In 1996, beloved teacher Norma Luobikis is found stabbed to death in her home, and evidence suggests an intimate bond between the victim and her killer.

In 2015, Devan Schmidt's half-naked and bruised body is found in her home; the toxicology report indicates a possible overdose, but there are also signs of foul play.

Twenty-three-year-old Codi Joyce ends up dead after a brawl at a house party in 2015, yet nobody has been charged for his death, and witnesses won't talk.

Sixteen-year-old Judy Rawlings vanishes in 2001 after a midnight ride with a friend, then her body is found in the woods a few weeks later.

Fifty-one-year-old Robin Pope goes missing, then, three weeks later, her decomposed body washes ashore just a mile from her ex-husband's home.

Eighteen-year-old Michelle O'Keefe is murdered in a parking lot in Palmdale, Calif.; security guard Ray Jennings is convicted of killing the young woman, but he is exonerated and released from prison after serving 11 years of his sentence.

A serial killer murders five young women in Honolulu, Hawaii, but is never caught; now, 30 years later, there are new clues and eyewitness accounts.

Thirty-two-year-old Rebecca Zahau's death is ruled a suicide after she is found hanging with her hands bound behind her back.

Twenty-one-year-old student Christopher Jenkins dies on Halloween night in 2002, prompting an investigation into whether he fell from a bridge by accident or committed suicide; a mysterious island may hold the answer.

College student Faith Hedgepeth is brutally murdered in 2012, with her killer remaining at large; police investigate a text message from her phone and a mysterious note left by her body.

Seven-year-old Michelle Norris vanishes from a playground in 1988 and is found dead in the nearby woods four days later; clues suggest the murderer could possibly be someone who lived in the neighborhood.

Hundreds of homicide cases in any given year can shake even the staunchest cities and police departments to the core. The statistics, however, don't paint the real stories and the effect that lingers -- through the pain endured by victims' loved ones, the community impact, and the memories that detectives will never forget. "Homicide City" explores unforgettable murder cases from major American cities, investigations that had law enforcement banding together across metropolitan landscapes in a sequence of manhunts. Each story is told by veteran homicide detectives, local reporters, and the victims' families.

From the moment a homicide is reported, a file is assembled to document every facet of the investigation -- crime scene photos, notes and observations, forensic reports, witness interviews, suspect profiles -- and continues to grow with new information until an arrest is made and conviction attained. Investigation Discovery opens these "murder books" to tell haunting tales buried within the pages. Hourlong episodes take viewers back in time with details of decades-old cold cases using actual archival footage, crime-scene evidence and first-person interviews with lead investigators, unraveling the mystery and uncovering what broke the cases open.

"Cold Blood" gives viewers a chance to examine the evidence of a real homicide case for themselves by bringing the cameras to the scene of the crime. The series evaluates the evidence and tests opposing theories by demonstrating what might have happened in the events leading up to the crime from a variety of angles. Each episode showcases one homicide case, following it from the collection of forensic evidence through all stages of the investigation until clever detective work and state-of-the-art forensic science reveal the truth.

The holiday season between Thanksgiving and New Year's is often thought of as a celebratory period to spend time with friends and family. That is not always the case, though, as the period is not immune from experiencing the same types of violent crimes that occur throughout the year. This series documents stories of tragedy that struck during the holidays, with firsthand accounts from people who had friends or family members killed during the joyous time. Sometimes the victim is killed by someone close to them, such as a case of sibling rivalry turned deadly, but sometimes the killing is done by a stranger who interrupts a holiday gathering with gunfire.

It takes teamwork and commitment to solve homicides. "The Shift" looks into the Indianapolis Metropolitan Police Department to show what's involved in solving cases, giving closure to victims' families. The series follows the department's middle shift -- 2 to 10:30 p.m. daily, considered prime time for killings -- as detectives go from an initial radio call dispatching a unit to the scene, to the moment a suspect is in handcuffs. With the IMPD, that happens more than in many other U.S. cities. Nationally, about 60 percent of death crimes result in arrest and indictment, but in Indianapolis, the department has nearly 80 percent success with these cases.

Some of the world's most notorious murders are the subject of "It Takes a Killer," which investigates the crimes from the perspective of the killers, trying to get inside their minds and determine their motives. Leading homicide investigators and experts from such agencies as the FBI and Scotland Yard take a look at the evidence pulled from crime scenes and profile the killer's behavior to try to piece together the details of each murder, explaining when, why and how each criminal committed the crime. For the wannabe detectives watching the show, the experts also reveal how the crime was solved -- which often requires authorities to think like a killer.