Grady "Lobster Boy" Stiles loves all of the attention he gets at his circus sideshow act. When he ends up dead, Detectives learn that the beloved entertainer actually had many, many enemies.

Ken Parks had it all: a great job, happy wife, and a loving family. When he develops a secret gambling addiction, his demeanor changes. Then, his peculiar behavior, quickly warps into murderous behavior.

When little Timmy dies after eating his Halloween candy, the whole town goes on alert. The hunt to find the child-killing monster reveals a horrifying tale that shocks the nation.

Nancy Bowen is desperate to contact her dead husband Charlie in the afterlife. When Nancy's friend, Lila, convinces her to try a Ouija Board, they receive some terrifying information from the spirit world, leading to a shocking twist.

Herb and Julie Baumeister seem to be living the American dream. They have three healthy kids, a successful business, and the biggest house on the block. When a serial killer sets his sights too close to home, their family bond slowly unravels.

Pat Brennan's life runs like a well-oiled machine. Each day starts and ends exactly the same. When his wife, Sarah, vanishes, Pat goes on a fearful quest to uncover what happened to her.

When Fred Covell finds his wife dead in their upstairs bedroom, investigators quickly put together a list of compelling suspects. The more Detectives dig, the more bizarre the mystery becomes.

Everyone knows Jim Nichols to be the neighborhood oddball. Even his wife, Joann, puts up with his strange tendencies to a certain degree. Suddenly, he starts a downward spiral of dangerous behavior, and his marriage gets pushed to the breaking point.

The Bender Family Inn & Grocery is a well-known resting place for weary travelers and pioneers. When rumors of a serial killer swirl around the wild west town of Harmony Grove, Kate Bender and her family become central to the investigation.

In this explosive piece, we explore six prevalent theories surrounding the veracity of Atlanta Child Murders suspect Wayne Williams's guilt, offering six additional possible explanations for the tragedy.

During his murderous heyday in the 70s, and upon his re-emergence in 2004, BTK loved to taunt authorities with the many communications he sent to KAKE TV in Wichita. In this episode we learn how deep his twisted connection with the station ran.

After years of suffering unfathomable anguish, BTK's daughter, Kerri Rawson, is finally speaking and writing about what it's like to learn your beloved father is actually a notorious serial killer. The story she tells here is utterly heart wrenching.

Forensic Psychologist Katherine Ramsland spent five years communicating with BTK after he was incarcerated. Here she tells the chilling story of how an ordinary farm boy became a bloodthirsty killer, as he told it to her.

BTK meticulously catalogued his crimes and fantasies, which he kept in a locked file drawer in his office. In this episode detectives who caught him disgorge some of the contents of that drawer and take viewers on a journey into a psychopath's mind.

Jeffrey Davis was devastated when his mother was strangled. Over the years, with her murder still unsolved, Jeffrey received two highly disturbing letters - read publicly for the first time -from the same mysterious author, revealed as BTK.

In Charlotte, North Carolina, Detective Garry McFadden is the "neighborhood icon". No matter where he goes, he is bound to run into people from his homicide past. Today, he's in for an unexpected surprise that will leave him in tears.