In rural Missouri, reptile breeder Ben Renick is found dead–surrounded by his collection of exotic snakes. Investigators have to wade through dozens of potential suspects before finding a text chain from Ben that leads to a true snake.

When 32-year-old John Ray is murdered in his Atlanta home, investigators are stumped. For seven years, his case goes unsolved until cold case detectives take another look at the evidence and find that John had identified his killer all along.

In 2016, in the shadow of Manhattan's skyline, a killer stalks women undetected. But a quick-thinking friend, a final phone call, and a social media chat log point to a serial killer who may never have been caught.

Twin sisters Jholie and Zhane Moussa share everything with each other, including their darkest secrets. So, when Jholie vanishes after meeting a mysterious boy, Zhane might be the only one who can help detectives learn the truth.

When 14-year-old Candice Parchment goes missing, the police write her off as a runaway. Months later, her body is found blocks from her home. Investigators are stumped until Candice's own writing helps uncover the horrifying truth behind her murder.

Armada, Michigan could be ripped from a Norman Rockwell painting, but the town changes forever when April Millsap's body is found. Police search for the teen's missing phone and discover a fitness app could hold the key to finding her killer.

Sasha Krause, a devout Mennonite, disappears from her church's parking lot one night. Investigators pursue digital evidence across state lines, leading to a grisly find and a hate-filled killer.

Nikki Kuhnhausen lives loud and proud on social media. Born male, Nikki has openly identified as female since middle school. When the 17-year-old goes missing, her own social media helps police unravel the mystery of an unspeakable hate crime.

After a series of troubling posts appear on her social media, single-mother Julie Gonzalez vanishes. Desperate to learn the truth, her family works with the police and media, but it's Julie's own words that could reveal her fate and catch her killer.

When beloved teacher and mother-to-be Laura Wallen disappears before the first day of school, a seemingly innocent photo could be the key to unravelling an intricate web of deception and secret lovers that shatters a tightknit Maryland community.

When Kevin Bacon never returns home from a Christmas Eve hookup, his friends fear the disappearance is related to recent terrifying abductions, while detectives decipher a series of screenshots they hope will reveal Kevin's fate.

Morgan Fox is a model employee with a bright future, but when she's found shot dead in a car just outside her own front door, investigators hope Morgan's own words can determine if she's the victim of a toxic coworker, or someone closer to home.