In 2013, journalist Suzanne Rico gets the call. Her mother, Gabriele, is dying. As time ticks down, Gabriele reveals an unfinished memoir about her World War II childhood–and makes a daunting last request: “Finish what I started.” When Suzanne and her sister, Stephanie, dive into their mother’s turbulent past, they come face to face with the truth of their own ancestry for the first time, including mind blowing mysteries that swirl around inventor Robert Lusser–their grandfather–and his work for the Third Reich. As they struggle to bring closure to something as intimate as a memoir, they have no idea of the revelations in store, or the reckoning they will require.