As America's last true frontier, Alaska is an ideal destination.

Teenager Tara Munsey disappears on a cold night in Virginia, and her abandoned car is found in the parking lot of the fast food restaurant where she worked.

A police officer is gunned down while on a midnight patrol, and her attacker flees with her squad car and weapon.

In Wisconsin, a nurse vanishes after a night of karaoke, and security footage reveals she left with a mystery man in a dark jacket.

In New York, a home healthcare worker disappears on an icy night, and her loved ones lead the search for her safe return, then a series of incoming text messages and a missed call reveal a soul-crushing truth about what happened to her.