A dream life ends when pretty mom-to-be Kelsey Monahon is found hogtied and beaten in her beachfront home.At first, the bizarre scene looks like a home invasion, but detectives dig deeper and turn up a trio of unlikely suspects including Kelsey's husband.

In late 2007, Jasper, TX, native Martin Byerly disappears without a trace. Police look into the 58-year-old ladies man's dance card but can't seem to pin anything on a femme fatal. Then an unlikely tipster helps them learn what happened to Martin.

The 1991 savage rape and murder of 22-year-old Cindy Pavey, single mom of 2, rattles the tranquil town of Murphysboro, IL. Police investigate a potentially deadly love triangle, but it will take 17 years to harvest the leads necessary to bring her killer to justice.

When beloved store manager 47-year-old Mary Peterson is found stabbed to death in her bed in 1995, storm clouds brew over sunny Lakeland, FL. Cops race through a lengthy list of suspects, but a tip from an unlikely source helps nab the cold-blooded killer.

After 16-year-old Sherita Williams takes a quick trip to the nail salon in Pennsauken, NJ, she is sexually assaulted, strangled to death and dumped under a bridge in 2003. Police dig up a cast of potential villains but the case goes cold. When the true killer finally appears through a DNA match 4 years later, they find he's in a class all his own.

On May 22, 2004, Baton Rouge, LA, self-made millionaire Alan Waters, a divorced father of 2, is found shot to death inside his mansion. Police think his real estate business is to blame but they can't solve this deadly puzzle until someone close to Alan comes forward with the missing piece.

In early fall of 1992, the rural community of Wantage, NJ, is rocked by the murder of beloved local Christine Schurman. Police are at a loss for suspects until a tip about another murder committed in Missouri connects them to their killer.

The tight-knit community of eastside Buffalo, NY is stunned in 1994 when the body of beautician and single mom Cynthia Epps is found stuffed into a cabinet placed in a neighbor's backyard next to a vacant lot cut-through; she had been raped, stabbed and nearly decapitated. A clever killer eludes capture for 16 years, but new technology and dogged detective work put him behind bars.

In Lanett, AL, things just aren't adding up when 49-year-old Charlotte Waites, a beloved former teacher and mayor's wife, is found dead in her home in 1998. Friends try to put two and two together, but they come up with zero reasons anyone would want her dead, and police are just as stymied.

Joliet, IL, firefighters are shocked to find 28-year-old Melissa Plut strangled to death when they respond to a fire in her duplex. Police search the nurse's love life with no luck until a 9-1-1 call unmasks her killer hiding in plain sight.

When pretty Nags Head, NC, tourist Janet Siclari turns up dead on the beach outside her hotel, the fun comes to an end. When a hurricane blows leads out of town, police wonder if the killer escaped too. Only time can help detectives catch the culprit.

On April 15, 2004, residents of Riverton, WY are worried about more than the IRS after the brutal murder of 39-year-old prison nurse, wife and mom Tammy Watts. Police begin an all out manhunt for the killer and it takes a hair-raising discovery for them to nab their guy.

Holiday cheer ends in holiday fear, when Jean Wholaver and her two daughters are murdered in their home on Christmas Eve. Detectives in Middletown, PA, check their list of suspects twice and are shocked by the killer's true identity.

On July 4, 1996, 9-year-old Cyndi Allinger doesn't show up for dinner and her mom fears the worst. Is a predator stalking the school-age children of scenic Lakewood, WA? The most likely tip comes from the least likely witnesses, and leads to Cyndi's killer.

When accountant and two-time divorcee Geraldine 'Jerry' Martin goes missing, and is later found viciously murdered and mutilated in 1975, the city of Tulsa, OK, is left in fear. With no solid leads, it takes detectives more than 25 years and new DNA evidence more than 1000 miles away to warm up this cold case.

When divorcee Adele Curtis, a mom of 5 adult children, meets a terrible end in her Phoenix, AZ rental property in 1996, detectives delve into a series of suspects to find the killer. But when the search goes cold as a desert night, it takes the dawn of DNA to catch this murderer.

When stage actress Pasinetta Prince is found strangled to death in her home, the close-knit community of North Omaha, NE is left reeling. As police dig deeper into the life of the beautiful starlet, they find a long line of admirers who are possible suspects.

When Staff Sgt. Michael Severance goes AWOL the community of San Angelo, TX, rallies around his new bride. But there is something more sinister behind his disappearance, and investigators uncover a saga of treachery and passion as big as the state of Texas.

When 12-year-old Michelle Winter goes missing without a trace while walking back from her best friend's house in Springfield, MO in 1995, her mom doesn't have a clue as to who could have whisked this pre-teen away. Cops have many leads, but it isn't until evidence is linked to the killer that they get their big break.

The bloody murder of Beth Grosskopf in 2009 leaves the town of Freedom, PA, riddled with fear. Hopes for quick justice are dashed when the initial suspects don't pan out. But when someone reveals his inner demons, cops move in to catch the killer.

When 25-year-old Amy St. Laurent disappears after a night out on the town in 2001, the people of Portland, ME, are terrified. With no body, police don't know what to make of it. But their worst fears are confirmed when a shocking discovery proves murder.

The quiet town of Tomahawk, WI, is rocked when long time resident 42-year-old grandmother Tracy Maurer is found brutally stabbed to death in her home. Police have a laundry list of suspects but it's a tip from the rumor mill that finally brings closure to the case.

When friendly cashier Tammy Petrin is found shot execution style at the local burger joint in 1991, the town of Woonsocket, RI, is in shock. After lead suspects don't serve up answers, a helpful hooker and letters from jail might be just what detectives ordered.

Michael Zammitti Jr. has it all - a loving family, a thriving business, and a comfortable home. But when he is found shot to death at his office desk, police must untangle a web of corruption and lies that will rock two small New England towns to their core.

When single mom Norma Rodriguez's murder in 1993 hits the town of Port Hueneme, CA, police are left sorting out the suspects in its wake. It will take a capricious witness and 10 years to clean up the damage. When the dust finally settles no one is more surprised than the killer.