Jacob is an Anglo-Dutch trader and adventurer, with a small holding in the harsh north. Despite his distaste for dealing in "flesh," he takes a small slave girl in part payment for a bad debt from a plantation owner in Catholic Maryland. This is Florens, "with the hands of a slave and the feet of a Portuguese lady." Florens looks for love, first from Lina, an older servant woman at her new master's house, but later from a handsome blacksmith, an African, never enslaved.
There are other voices: Lina, whose tribe was decimated by smallpox; their mistress, Rebekka, herself a victim of religious intolerance back in England; Sorrow, a strange girl who's spent her early years at sea; and finally the devastating voice of Florens' mother.
A Mercy reveals what lies beneath the surface of slavery. But at its heart it is the ambivalent, disturbing story of a mother who casts off her daughter in order to save her, and of a daughter who may never exorcise that abandonment.
Acts of mercy may have unforeseen consequences.