Between 1978-1988, seven women are brutally stabbed and dumped in the woods of the Connecticut River Valley. Phelps seeks answers from a woman who survived the serial killer's attack and may be able to identify a new person of interest in the case.

What kind of serial killer removes his victims’ shoes and socks, then lays the bodies facing east? Phelps heads to Atlantic City to investigate the 2006 murder of four sex workers to see if they are connected to a breaking case on Long Island.

From 1976-77, a pedophile abducted and murdered four children from affluent Detroit neighborhoods. Phelps travels to the dark side of suburbia to ask: What kind of monster bathes, cleans and dresses his victims in fresh clothes after he kills them?

Between 2003 and 2007, five down-and-out women go missing in Worcester, MA. Their remains are found in wooded areas outside the city. Phelps tracks the hunter, following the trail of evidence.

From 1971-73, three little girls were snatched up, violated and murdered. They all shared something else--their first and last names started with the same letter. Phelps travels to Rochester, NY to search for answers in a town that won’t let go.

Phelps travels to the Deep South to investigate the murder of 8 girls over 4 years. But a maverick private investigator, multiple persons of interest and rumors of police corruption make the case murkier than a Louisiana bayou.

From 1996-98, someone terrorized the elderly residents of Columbus, MS, brutally killing 5 senior citizens in their homes. But local law enforcement and a secret source have Phelps and Kelly wondering if they're looking at a serial killer.

Phelps and Kelly investigate the 1982 murder of a New Jersey woman, Jane Goodwin. Was it a serial killer responsible for similar murders in Connecticut and New Jersey? Phelps is convinced he's got his man, a convict he's corresponded with for years. But can Phelps make him confess?

The Original Night Stalker is America's most cunning serial killer who terrorized California with a wave of rapes and murders in the 1970s, leaving a trail of bizarre clues. Phelps and Kelly go on the hunt for new leads.

Four young girls go missing in Massachusetts and Connecticut. Some turn up dead, some are never seen again. Phelps and Kelly investigate the murders which are decades apart but with one thing in common: blonde hair and blue eyes. But are they connected in another way? Are they victims of the same serial killer?

Phelps and Kelly take a grim trip to the seaside town of Newport, OR, to investigate the unsolved murders of five teen girls. The bodies of local girls have been turning up dumped in the forest, and it looks like the work of a serial killer. But who is he? And what twisted clues could he have possibly left behind?

Phelps and Kelly head down to Texas to investigate the disappearances of over 30 young women. Some have gone missing, some have turned up dead, in a flat, steamy wasteland along the I-45 freeway between Houston and Galveston known as The Killing Field. It's paradise for serial killers — time for paradise to get shut down.

In the spring of 1992, a serial killer cut a swathe through the Mid West with six victims across three states, shot execution style. The victims all worked in small stores just blocks from I-70. Phelps and Kelly take a long trek across the Midwest to investigate the unsolved murders on this lonely stretch of highway.

Phelps and Kelly head to Boca Raton, FL, to investigate a series of kidnappings and murders. In March and December 2007 two women were shot dead as they left the same shopping mall. A robbery gone wrong? Or the work of a serial killer?

Phelps and Kelly investigate the unsolved murders of four couples on a remote lovers' lane in Virginia, attacked in their cars by a serial killer who may be posing as a cop. 

The billboards on Canada's Highway 16 read: Girls, don't hitchhike on the Highway of Tears. Phelps and Kelly head deep into the Canadian wilderness to investigate the mysterious disappearances of over 30 women on this remote highway. Is it one killer, or multiple serial killers? Will it ever be safe again?

Phelps and Kelly enter the frightening world of Israel Keyes, who may be one of the worst serial killers we've ever seen. He took great care in hiding his victims, which means finding them has become a new nightmare.

Phelps and Kelly continue their investigation into the dark world of serial killer Israel Keyes. Can the Dark Minds team unearth some of this case's biggest secrets?

In the quiet town of Lewiston, ID, an eerie local theatre has a dark past - three people went missing here, 2 turned up dead. Is it a local killer, connected to a string of other murders? Phelps and Kelly dive deep into the case.

Torrey Pines Beach, CA is an idyllic place, but it's also been the scene of horror where two teenagers were murdered 30 years ago, and there is still no justice. Phelps and Kelly retrace the final hours of the victim's lives and uncovers new clues.

The discovery of a naked woman's body on Ocean Parkway in 2011 was just the beginning. How many women has the Long Island Serial Killer brutalized and murdered? Phelps and Kelly are hot on the trial, looking for clues in order to stop this terrifying madman.

In Denver, a serial killer is posing the naked bodies of young women by highways outside the city. At least four victims were left this way, and there may be more. Phelps and Kelly look for connections and clues in the Aurora County Murders.