New York, 1804. America's beloved Alexander Hamilton lies dead after a duel with Aaron Burr. Meanwhile, Eliza Hamilton's eighteen-year-old son, Alexander Jr., was seen fighting with a man in a tavern the night before his father's duel and quickly comes under suspicion for murder when the man turns up dead.

Eliza searches for ways to clear her son's name, even as she is grieving, but as she combs through her late husband's papers, she finds evidence of a plot to steal money from the government during his tenure as secretary of state. Hamilton was accused of stealing that money, and it was a scandal that almost broke the family—but is Eliza now holding proof of Alexander's innocence?

Deep in debt, with eight children to support, Eliza turns to selling her handmade lace—and is drawn into a mysterious network of widow lacemakers who are intimately connected to New York's high-society families. They know their dead husbands' secrets—and soon, Eliza begins to piece together the truth.

There's a dark plot connected with the duel, as one by one, witnesses to the bout are being killed. Now, Eliza must not only clear her husband's and son's names but keep herself out of the killer's sights.