Dr. Glenn Engleman cares for his South St. Louis neighbors for decades, even as crime increases in the area; when murder strikes several people close to him, detectives discover more going on in Engleman's world than originally believed.

Creative artist/magician Todd Robbins leads viewers on a thrill ride of chilling tales filled with unpredictable twists and surprising turns. "True Nightmares" brings to life the true stories that spawned these hair-raising tales -- urban legends like the boogeyman or the monster under the bed. Acting as an on-screen narrator, Robbins appears in and out of scenes, using his ominous tone and eerie charisma to weave together three stories each hour, playfully hinting that there is always more to the story.

No matter how complicated or seemingly straightforward a murder investigation may be, experienced law enforcement personnel always employ tried and tested methods to catch their prey. Documenting witness statements, pouring over forensic reports and crime scene photos, nailing down the timeline, and keeping an open mind about the causes and possible perpetrators of a crime are essential to an investigator's success. "Six Degrees of Murder" delves into another essential element that could be the difference between a solved case and a cold one. Featuring stylized re-enactments, each hourlong episode details how investigators untangled a complicated web of relationships before cracking a murder case.

Five-star accommodations are where wealthy travelers like to stay and be seen. But hidden behind the closed doors of well-known hotels from New York to London are dark and dirty secrets that turn luxurious living into scenes of salacious acts, covert trysts and cold-blooded murder. Bolstered by the cinematic expertise of award-winning director Joel Schumacher, true crime stories in ID's three-part series "Do Not Disturb: Hotel Horrors" weave together stylized re-enactments, crime scene footage and commentary from hotel staff, law enforcement officials, and victims' family and friends.

It may be love at first sight that sparks the relationships profiled in this series, but a kiss of death definitely extinguishes them. Actual stories of love gone wrong are told using firsthand accounts that examine how initial feelings of excitement, desire and passion escalate into the most unthinkable acts of crime. Interviews with survivors and family members trace emotional, psychological twists and turns, pieced together with the help of stylized re-enactments, as each hourlong episode ends in a final, shocking, deadly act.

Inspired by HBO's acclaimed drama "True Detective," Investigation Discovery brings to life actual homicide cases through the words of the law enforcement officers who are still haunted by them. "Real Detective" blends documentary and scripted elements -- and narratives driven exclusively by the detectives themselves -- to create cinematic true crime TV, with featured guest stars including Michael Madsen, Devon Sawa, Curtis Caravaggio and Zoie Palmer. Each hourlong episode ventures deep into the mind of a homicide detective as he or she describes in vivid detail the one case forever ingrained in the memory.

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.

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.

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.

Secrets are never safe from seeing the light of day, even ones that are housed with skeletons and buried six feet under. Those, especially, are of interest to law enforcement personnel, who unearth long-thought gone secrets that eventually help unravel murder mysteries. The details are described in hourlong episodes of "Grave Secrets," with re-enactments providing the meat and potatoes of each true-crime story, and interviews with victims' family, friends, and investigators adding context.