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.

Like every Sunday, Detective Garry McFadden and his wife Cathy are headed to church. Today, they end up having an unexpected encounter in the church parking lot with a convicted felon.

Today, Detective Garry McFadden is on his way to a murder trial. The role he plays will be crucial to the success of the case and its participants.

Like any other busy day, Detective Garry McFadden has many appointments around town. Today, he finds himself discussing issues surrounding police brutality at a local barbershop.

Today, Detective Garry McFadden needs to get away from it all and decides to go fly fishing. While in the creek, he takes time to reminisce about his 35 years as a homicide detective and the victims he will always remember.

In 2014, Merry Jackson's son-in-law shot her and her daughter, Lori, killing Lori and badly wounding Merry. Now Merry shares the warning signs she wished she'd paid attention to, and her efforts to make sure this never happens to another family.

In 2002, 12-year-old Larry "LJ" Bobish Jr. was the lone survivor of a brutal attack on his family. His father, mother and sister were all killed. Now, for the first time in more than a decade, LJ reunites with the officer who saved his life.

A pre-wedding trip to Las Vegas evolves into a sexual escapade on a ferris wheel for Philip Panzica without his bride to be. But who wanted him dead and was money the motive?

For Sherese Bingham, her two dogs were as dear to her as actual family members. She was out walking the dogs in Indianapolis the night she was shot dead. It took authorities near two years to crack the case. But they finally made an arrest.

Well-liked loan officer, Connie Boelter worked at a Wisconsin bank. So when she didn't show up for work one day, there was good reason for concern. She was found dead in her apartment and It took ten years to unravel why someone wanted her dead.