Claire and Jamie enter the lavish world of French society in an effort to infiltrate the Jacobite rebellion led by Prince Charles Stuart and prevent the battle of Culloden.
Jamie struggles to overcome his past; opportunities arise following a fortunate meeting with Prince Charles; the Duke of Sandringham's presence causes complications.
While Jamie spends all of his time wading through politics, Claire finds solace in healing; the past threatens to derail the couple's plans.
Claire and Jamie throw a dinner party to turn investors away from Prince Charles' war effort; Jamie is shocked after Claire reveals that Jack Randall is alive.
Claire and Jamie reunite and attempt to extinguish fires until Claire makes an unexpected change of course; Jamie and Claire's relationship is tested when the past rears its ugly head.
Jamie and Claire use Claire's medical knowledge to come up with a scheme to stop a deal which could fill the war chest; Claire learns Jamie has gone back on his word.
Doctors at L'Hopital des Anges attempt to save the lives of Claire and her unborn baby; King Louis asks Claire to judge two men accused of engaging in the dark arts.
Claire and Jamie attempt to elicit support from Jamie's grandsire, Lord Lovat; Colum MacKenzie arrives with plans of his own; Lord Lovat makes moves to advance his own interests.
Claire and Jamie reunite with the Lallybroch and MacKenzie men during training; Jamie and Claire wage personal battles; an Englishman arrives in camp with new information.
Jamie relies upon Claire's knowledge of history to lead the Jacobite army into a crucial battle; Claire is reminded of the true cost of war as she attends to the dead and dying.
Claire and the Highlanders head north after the Jacobite leaders decide to halt their march on London; Claire has an unexpected reunion after a band of redcoats makes trouble for the Scots.
Jamie works to divert the Jacobite army away from imminent slaughter; Claire tries to provide comfort to a sick Alex Randall; Alex shares an unusual plan to save the mother of his child.