Colter reluctantly teams up with his nemesis, fellow reward seeker Billie Matalon, to track down a missing racehorse.

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 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.

When Colter disappears during his search for a missing father, Reenie recruits his brother Russell for help.

Colter and rival rewardist Billie Matalon team up to find a missing high school baseball star.

A new lead in Colter's white whale case, the disappearance of Gina Picket, brings him and retired cop Keaton back together to track down a serial killer.

Colter travels to New York City to find a woman who vanished in the dressing room of an upscale clothing store.

Colter helps an old friend with a search and rescue mission for two missing sisters in the snowy Montana wilderness. Reenie gets a visit from a new client that challenges her morality.

Reenie urgently calls Colter for help when Leonard Sharf's assistant gets kidnapped ahead of the launch of his new business. Also, Colter visits his sister, Dory.