After years spent mourning the death of her partner, Christine Kane, Minneapolis restaurateur Jane Lawless is moving on. Sorting through the boxes of Christine's belongings, she is shocked to discover a gun. Before her illness, Christine, a real estate agent, was selling a house for the Simoneau family. The night before her death, three family members were murdered. Jane always assumed Christine knew nothing of their family secrets, but the gun suggests otherwise. As Jane searches for clues to understand what really happened to Christine those many years ago, her pursuit leads her deep into a confrontation with danger and a painful past.