A chance encounter leads a young Canadian into the maelstrom of the American Civil War. As Northern armies weave a path of destruction across the south, an embattled Confederacy launches a campaign of terror and inserrection from the British colonies. The raids will drive the colonies toward their own Canadian Confederation. Beyond the battlefield lies the shadowy world of conspiracy where soldiers, spies and lovers ride the shifting tides of conflict; a black female recruiter for the Union army, a Confederate agent, an aging mercenary, politicans who fear for the future and ordinary people draw by a cause, money or swept along by the distemper of the times. Based on actual events, A Porous Border is a sweeping drama of the turbulent era that changed North America.