Growing up, Rebecca Clarren only knew the major plot points of her immigrant family's origins. Her great-great-grandparents, the Sinykins, and their six children fled antisemitism in Russia and arrived in the United States at the turn of the 20th century, ultimately settling on a 160-acre homestead in South Dakota. Over the next few decades, despite tough years on a merciless prairie and multiple setbacks, the Sinykins became an American immigrant success story.

What none of Clarren's ancestors ever mentioned was that their land, the foundation for much of their wealth, had been cruelly taken from the Lakota by the United States government. By the time the Sinykins moved to South Dakota, America had broken hundreds of treaties with hundreds of Indigenous nations across the continent, and the land that had once been reserved for the seven bands of the Lakota had been diminished, splintered, and handed for free, or practically free, to white settlers. In The Cost of Free Land, Clarren melds investigative reporting with personal family history to reveal the intertwined stories of her family and the Lakota, and the devastating cycle of loss of Indigenous land, culture and resources that continues today.