Jill Walker finds her daughter, Emma, cold to the touch in her own bed. Quickly ruling out suicide, investigators search for a suspicious man in black caught on a neighbor's home surveillance camera.

An unknown assailant strangles overnight desk clerk Mary Klatt during her shift in the town of Blue Earth, MN. After the incident, the townsfolk struggle to come to terms with the harsh reality of someone wanting to harm Mary.

In Post Falls, ID, devoted family man Bo Kirk vanishes, and his truck is found set ablaze; Bo's sister blames their estranged father, until released ATM security footage points to one of his co-workers who has piercing blue eyes.

Anita Dunn vanishes from her home in the neighborhood of Belle Center, MO, without a trace. Hoping to find her before it's too late, the community aids investigators in an exhaustive search.

When someone stabs Trina Langenbrunner to death and leaves her on a road in Cloquet, MN, her family, community, and law enforcement work together for over 12 years to find her killer.

MaryAnn Clibbery is brutally murdered at the remodeling business she owned in Loves Park, IL; then, a suspicious bag found floating in an icy river unlocks the secrets of her brutal slaying.

When Marty finds his big brother Mike Rust's home in disarray with a motorcycle missing, the Saguache, CO, community leaves no stone unturned searching for one of their own. The case of the missing mountain biking pioneer, living off the grid in Colorado, went cold for years, but the local rumor mill heats up.

A missing grocery clerk, 20-year-old Christina Ross, sets the town of Neenah, WI, in a panic after a gruesome discovery. An unlikely resident comes forward with information that leads detectives to the people in her tangled love life.

Locals stay quiet to protect their own when a new resident of Hartford, KY, is found tied up and floating in a toolbox in a creek.

The community of Kankakee, IL, comes together to aid police in uncovering the vile killer of up-and-coming model, Sarah Washington, who was shot dead in broad daylight.

In the small town of Twinsburg, OH, Charlene Puffenbarger's 3-year-old son is the only witness to her brutal murder. Investigators continue to follow every tip that comes in, and an unexpected source leads them to the killer.

A missing pregnant woman sparks fear and suspicion in a small Indiana town.

Hugo is hysterical after he finds his brother's girlfriend, Breanna Schneller, beaten and stabbed to death; the brothers appear to be devastated, but the discovery of Breanna's missing phone casts doubt on their alibis.

Carol Lapaglia waited 25 years to marry the love of her life, Jack Parkes; six weeks before their wedding in Kennedy Township, PA, she finds him shot to death in their living room.

After locals smell what can only be the scent of charred meat, police find burned remains in an abandoned mining pit in the small town of Hibbing, MN. Before they can investigate who committed the crime, first they must identity the body.

A lively slumber party turns into a nightmare when a loving mother, Dianne Watts, her young daughter, and her daughter's friend, are murdered. The town of McMinnville is turned upside down, knowing there is a killer amongst them.

Young mother Casey Morgan is found dead inside her home, and police must unravel her dating history with the help of her friends and neighbours to unmask the killer.

22-year-old Liz Syperda is reported missing by her roommate, shocking the community of Mount Pleasant, IA. Some wonder if Liz merely left town without telling anyone, but family and friends know something far more disastrous occurred.

A tip comes in from an unexpected Willard, MO, resident that leads to the final resting ground of missing newlyweds Russell and Rebecca Porter.

When Robin Baxter is found dead floating in the Ohio River, the entire town of New Albany, IN, bands together to find who's responsible; it takes over 20 years of crossing off suspects before an elusive clue cracks the case open.

Popular high school student Riley Crossman disappears, igniting a statewide search; investigators discover her body, and they have their hands full when the students and residents of Berkeley Springs become suspects.

When missing dental assistant and mother Sharon Ray is found dead in a well, the town of Grand Rivers, KY, joins together to find who did this; loved ones wonder if Sharon was living a lie when those closest to her become prime suspects. [also shown as S6:E12]

After a cattle rancher turns up dead in his trailer home, the minuscule town of Driscoll, ND, points fingers at everyone in the small population. Left with little evidence, it takes over a decade to hone in on his executioner. [also shown as S6:E13]

Michael Lee Smith's body is found shot and dumped on the side of the road. Police are forced to sift through lies as they attempt to track down the killer.

In Noble, OK, a dog drops a human skull onto its owners' front porch on Christmas Day; after six years and no leads, the police must navigate the twists and turns of the victim's past to find justice.