Lt. Joe Kenda spent 23 years in the Colorado Springs Police Department, where he amassed a lifetime of memories catching killers and helping solve close to 400 homicide investigations. The vivid memories are brought back to life in this hourlong series, as Kenda reopens his "Murder Books" for viewers -- folders in which every detail of his murder cases is held -- to revisit the most disturbing cases still haunting him today. As he details the process of how he solved the crimes, Kendra also embarks on a personal journey, coming to terms with long-suppressed nightmares. As he says, "I don't want to tell these stories. I need to."

Using dramatic re-enactments bolstered by police reports and forensic evidence, Investigation Discovery delves into the minds of female killers in "Deadly Women." Each episode focuses on four different cases in which women, for a variety of reasons and with a variety of methods, chose to take the lives of others. Stories featured include more recent cases, like that of Andrea Yates, the Texas woman who in 2001 drowned her five children one by one in the bathtub and then called police, to older cases like that of the "baby farmer" Sarah Makin in 1890s Australia, who killed illegitimate infants left temporarily in her care.

Neighbors turn against each other with frightful consequences.

Journalist Tamron Hall leads a team of correspondents in this newsmagazine series. Each hourlong episode presents two complex and compelling crime cases, and Hall and the investigative team dig beyond the headlines to explore not only what happened in each case but also why it happened. Interviewees including detectives, prosecutors and psychological profilers -- as well as criminals and their victims -- reveal what caused people to turn to crime, then whether justice was served finally. Emmy-winning journalists Michelle Sigona and Angeline Hartmann, "America's Most Wanted" correspondent Tom Morris Jr., best-selling author Aphrodite Jones, and filmmaker Keith Beauchamp are also featured in the series.

The most terrifying criminals often hide in plain sight, looking as ordinary as a friendly next-door neighbor. Those regular Joes are the focus of "American Monster," precisely because lurking within them are psychopathic killers. Similar to Investigation Discovery's "See No Evil," the hourlong series uses personal movie footage of the monsters-in-disguise at home with family and friends, giving viewers a sense of how their lives are seemingly normal. Interweaved are the stories of their astonishing crimes and interviews with neighbors and loved ones.

Co-executive produced by none other than Khloé Kardashian, who knows a thing or two about sisterly bonds and how they can go awry, this series details shocking crimes committed by pairs of sisters. Sometimes the siblings work in concert, but often the duo turn against each other with the deadliest of outcomes. Hourlong episodes recount actual crimes via stylized re-enactments and interviews with immediate family members and close friends, painting a picture of where and why the sisters' lives went wrong. As well, investigators and law enforcement anchor each story as they recount firsthand their unraveling of the case and try to make sense of the crimes committed.

There are manipulators in the midst, scheming right under everyone's noses. Even with people trusted the most, there may be something sinister lying beneath the surface -- a plot set in motion by someone close with a deadly motive. This true-crime series tells stories of actual murders committed not by strangers but by someone the victim knew, someone hiding in plain sight, or someone leading a double life. These wolves in sheep's clothing use deception as a weapon to try to get away with murder.

Chilling scenarios unfold in this true-crime series, which tells actual stories of people who shared their lives with loved ones who became killers. Each hourlong episode puts viewers in the shoes of the loved one, who first notices that something is amiss, interprets the puzzling signs and clues, and eventually comes face-to-face with the horrible truth: that the person has a very dark side. Exclusive interviews and firsthand accounts of the critical moments leading up to the vicious acts showcase devastating, often undiscussed consequences on the people who have nurtured, loved and raised a murderer.

Like a pane of glass cracking in all directions before shattering, the impact of a single crime can create ripple effects that forever alter multiple lives. This Investigation Discovery series unravels actual homicide cases to explore how the past continues to haunt the present for those involved -- loved ones, witnesses, and law enforcement. Each episode is structured around three distinct perspectives of the same crime, and as viewers learn different details by way of first-person interviews and stylized re-enactments, stories, which at first seem random, slowly start to intertwine.

Living in a surveillance society means everyday actions are caught on camera, mostly of honest citizens going about their routines. Video, however, doesn't discriminate; criminals also end up on film. "See No Evil" presents dramatic stories of crimes being solved with the aid of surveillance cameras. Testimony from police, eyewitnesses and families are woven into re-enactments bolstered by actual security-camera footage, which helps unlock answers to cases that otherwise might have remained unsolved and left dangerous perpetrators at large.

With one quick click the internet allows people to share information like family photos and professional accomplishments, making it easy to ignore or forget that behind clever screen names and witty captions is a dark digital world with real dangers and risks. In hour-long episodes, "Web of Lies" unravels tragic stories of deception and manipulation triggered by online interactions, from predators lurking behind Facebook profiles to creeps scouring chat rooms for their victims. Re-enactments are buttressed by comments from law enforcement personnel, true-crime experts and psychologists, plus first-person accounts from friends and families of the victims.

Here today, gone tomorrow. Thousands of people go missing in the United States each year, leaving behind only a mystery without any clues. Their stories are told in "Disappeared" through the voices of family, friends and investigators trying to solve the case, with each hourlong episode recounting the final stages that led to a person's disappearance. Interviews with experts including psychologists and forensic specialists provide new insights into what may have happened -- whether foul play was involved or the subject simply ran away.

From blushing brides turned cold-blooded killers to smitten grooms with shocking dark sides, "Fatal Vows" examines the criminal psychology behind deadly divorces. Guiding viewers through actual stories of love gone wrong are psychotherapist Stacy Kaiser and forensic/clinical psychologist Dr. Brian Russell, who examine each couple to better understand how the marriage turned from flawed to fatal. Stylized re-enactments are supported by interviews with family, friends, law enforcement, and potential victims of the crime, while Kaiser and Dr. Russell provide analysis on unions that break down until divorce and murder collide.

Investigation Discovery's "Relatively Evil" features fish-out-of-water stories about people who find themselves thrust into seemingly normal families harboring members capable of committing murders or carrying out kidnappings. Newcomers fall victim to the machinations of evil clans, causing them to question reality and their ability to distinguish between right and wrong. Too late, outsiders realize that the roots of the family tree have been poisoned, leading to depravity, treachery and even sadism. Each episode unfolds like a psychological thriller, as relationships become strained, red flags go up, and conflicts between relatives simmer before boiling over into full-blown crimes.

Investigation Discovery's true-crime series, "Home Sweet Homicide," explores murders committed in the sanctuary of victims' homes. Homeowners are suffused with a sense of safety after locking their doors, enabling their home security systems and turning on all their lights. However, cold-blooded killers violate this sense of safety, using it against their victims, who are taken unawares in the one place where they felt free from danger. Planning the perfect crime, home invaders become acquainted with their targets' routines and familiarize themselves with the layouts of their houses. In one episode, a young mother is found brutally murdered in her home in Chestnut Ridge, N.Y., and detectives scratch their heads over snowy footprints that lead up to her house but not away from it. In another, a top real estate agent vanishes after meeting a new client, and police must find out if anyone had a reason to harm her.

Using stylized re-enactments to tell actual stories, "Forbidden: Dying for Love" delves into relationships that defy traditions, break taboos, and lead to heinous crimes. These star-crossed lovers -- from the couple who discard religious customs for love to the pastor who falls for the co-worker-- have tried to resist the forces that threaten to keep them apart. However, as Investigation Discovery says, "once they've crossed the line, anything becomes possible."

Investigation Discovery's "The Murder Tapes" chronicles homicide investigations using raw and unfiltered footage, including body-cam, surveillance and interrogation-room footage. Family members react in real time, investigators give their first impressions at crime scenes and suspects protest their innocence before coming clean. Viewers see and hear it all, getting up-close and personal with real-life murder investigations. Episodes track cases from start to finish, proving that the truth wins out when tapes roll.

Like trying to decipher the value of a book without ever opening it, judging a person by his or her outward appearance can be a mistake. Someone may look perfect on the outside, but even the most kind-hearted soul has a dark side looming. "Diabolical" is a 10-episode docuseries that delves into the minds of murderers, asking a simple question: "Why did they do it?" The acts were committed with extreme premeditation -- many were months or even years in the making. Tension builds in each episode as law enforcement taps into the methods of devious masterminds, aided by insights from forensic psychologists and psychiatrists as well as criminal profilers.

For better and worse, a work environment represents a microcosm of society. While lifelong friendships are formed at a job, and perhaps it's a place where people even meet their future spouses, working alongside others also increases the likelihood that creeps may be close by. "The Killer Beside Me" exposes the dark underbelly of workplace relations, where romantic rivalries and power plays culminate in murders. Cinematic re-enactments form the basis of the true stories, and interviews with family and friends of victims and law enforcement personnel lend support.

Police reconstruct the life of the murder victim piece by piece in order to uncover the shocking truth.

Transporting viewers into what Investigation Discovery calls "a vortex of dark mystery and psychological terror," the docuseries "Dead Silent" delves into actual stories of crimes set in desolate locations. Hourlong episodes portray just how dark and dreary the great outdoors can be when a person is deep in the woods, inside an abandoned house, or along the shores of a sleepy lake, and every snap of a twig and unidentified rustle can be a sign of danger. ID's signature storytelling interweaves commentary from local authorities, true-crime experts, and psychologists, plus first-person accounts from survivors of these crimes.