The fourth chapter examines slave flight to spaces of formal freedom in British Canada and Mexico from the 1830s through the 1850s. These two destinations for refugees from American slavery shared important similarities but also differed by degrees. The chapter explores why some enslaved people sought to flee the United States altogether; how they settled into new communities; and the risk of both extradition and illegal recapture by slave catchers and agents from the antebellum South. The chapter is structured thematically, beginning with a comparative examination of the journeys of freedom seekers to both international jurisdictions. The chapter then delves into the settlement experiences of refugees in Canada and Mexico, underscoring the stubborn prejudice with which especially refugees in Canada were confronted, as well as their economic opportunities. The chapter ends with an extensive discussion of the threat of extradition. Both countries refused to sign extradition treaties for fugitive slaves with the United States. In Mexico, however, the threat of reenslavement was higher due to illegal raids and incursions by southern slaveholders into Mexican territory.