Jericho Coulter, the eldest of six fiercely devoted brothers, is entrusted with safeguarding his family and the secret that binds them together: the Sapphire mine. To keep tragedy from striking again, he allows no outsiders on their land. When two women stumble upon their ranch, claiming Jericho himself sent for one of them as a mail-order bride, he aims to send them straight back where they came from.

When their South Carolina home burns to the ground, Anna Stewart’s only choice is to move with her younger brother to the wilds of a Texas ranch. Their prospects are beginning to look better, until the rancher’s son, Jacob O’Brien, shows up with his alarmingly blue eyes to put a kink in Anna’s well-controlled plans.

FBI Special Agent Jesse Marx doesn’t know which is worse—waking up in a horse stable with no memories of the past several days or waking up to discover he’s wearing a wedding band. Not only has he been injured, but he’s also gotten hitched—something he vowed never to do.

Ingrid Chastain readily agreed to accompany her father to deliver vaccines to a mining town in the Montana Territory. She never could have anticipated a terrible accident would leave her alone and badly injured in the wilderness. When rescue comes in the form of a mysterious mountain man who tends her injuries, she's hesitant to put her trust in this quiet man who seems to have his own wounds. 

In 1837, Juniper Collins and her sisters are shocked by their father's final request in his will for a special set of beads to be returned to a Piegan Blackfoot woman he credits with saving his life during his travels west. Together, the sisters set out for the trapper rendezvous to find the woman, but their mission turns more daunting when they come upon the mass of men and lodges spread out in the Green River Valley.