Law Enforcement Agent Dennis Haley recounts the night he spent in a hotel room with serial killer, Mark Riebe.

A small-town detective describes a twisted murder investigation that spans multiple states involving a stolen identity.

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.

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.

Adventurous college student David Sneddon, 24, went hiking in China but when he didn't show up to meet his brother, everyone was worried. His family is convinced he was kidnapped by North Korea and is still alive there.

They seemed to have everything, three sons and a beautiful California home. So it was shocking when Peter Chadwick was charged with the murder of his wife Quee. He easily posted the $1 million bail but then vanished. What happened to Peter Chadwick?

A family camping trip turned tragic when 2-year-old DeOrr Kunz vanished. His parents thought he was with a relative, who in turn thought the toddler was with them. But there's been no sign of the boy since that day.

Dylan Redwine was only 13, but as in many divorced families, Dylan spent time with each parent. It was his dad's turn for a court-ordered Thanksgiving 2012 visit. But the Colorado teen was soon missing and his dad became a prime suspect.

She had top security clearance from the U.S. military and was only 24 when she was found dead at home, her 5-month-old daughter by her side. Who would want Karlyn Ramirez dead and why?

It's taken them more than three years but the family of 19-year-old college student Pravin Varughese was determined to get answers how their son died and what the police might have done differently in the case.