Colters føringsoffiserer sender ham til Klamath Falls, Oregon, for å etterforske et forsvunnet barn.

Colter sporer opp en savnet ung mann som har blitt trukket inn i en dødelig kult.

Colter hjelper en ung kvinne å finne sin frilynte søster.

Colter kjemper mot klokken for å finne den savnede tenåringssønnen til Reenies nære venninne Erika.

Oddsene er sterkt imot Colter.

Colter slår seg motvillig sammen med sin nemesis.

Colter sporer opp en havnearbeider som forsvant to uker før bryllupet sitt.

When a widower offers a reward to find his only daughter who disappeared three years ago and is presumed dead, Colter agrees to help track her down.

Colter journeys into the wilderness of Idaho to help track down the owner of an aerial outfitting company's missing adult children who were last seen in a plane that took off during bad weather with a mysterious client on board.

When a grad student goes missing after a house party, his friends and family believe he buckled under the pressure of his research grant. But, after consulting with his sister Dr. Dory Shaw, a professor at the school, Colter uncovers a trail of explicit photos and messages that lead him to uncover a dangerous – and deadly – conspiracy on campus.

Colter is forced to team up with his estranged brother, Russell, who enlists his help to track down a former army buddy who's gone missing after several weeks of paranoid behavior. The investigation takes the brothers into the world of Special Forces missions, shady off-the-books programs and conspiracy theories, all while they contend with their family's past.

Colter investigates the disappearance of two amateur storm chasers, one of whom is the daughter of an old family friend, that the local police have written off as an accidental drowning. Colter's expert tracking skills lead him to uncover the seedy underbelly of a small town resort.