Roger leads Jamie's militia to the trading post of Brownsville and finds himself embroiled in a bitter feud. Jamie and Claire arrive to find that Roger's unusual strategy may have cost them the loyalty of the militia.

The Regulator Rebellion reaches a boiling point, forcing Jamie to face his fear and confront the consequence of his divided loyalties.

A revelation about Jemmy forces Roger and Brianna to choose between staying in the eighteenth century and returning to the safety of the future. Jamie finds that unrest in the backcountry has given rise to a new power.

Claire struggles to survive brutal treatment from her captors, as Jamie gathers a group of loyal men to help him rescue his wife. Meanwhile, Roger and Brianna's journey takes a surprising turn.

Fergus worries about his new son's quality of life when the baby is bullied by superstitious Protestants. Claire performs surgery on Tom's hand.

A dysentery epidemic spreads on the Ridge, and Claire falls deathly ill. She is almost recovered when the Christies arrive and drop a bombshell. As nefarious rumors spread like wildfire on the Ridge, tragedy strikes.

Claire struggles with her demons as a nefarious rumor begins to spread on the Ridge. Tensions rise as the residents fear there is a dangerous person in their midst.