コルターのハンドラーが、子供の失踪を捜査するため、彼をオレゴン州クラマス・フォールズに送り込む。

コルターは、ある若い女性が自由奔放な姉妹の居場所を突き止めるのを助ける。

コルターは、リニーの親友エリカの行方不明の10代の息子を探すため、時間との戦いに挑む。

状況はコルターにとって不利だ。

コルターはしぶしぶ宿敵と手を組む。

コルター、ボビー、リニーは、才能ある総合格闘技のファイターを追跡するため、時間との戦いに挑む。

コルターは結婚式の２週間前に行方不明になった港湾労働者の行方を追う。

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.