There are few paths to freedom for people serving life sentences in prison on federal drug charges. Guest host Ayesha Rascoe talks with Brittany K. Barnett, lawyer, entrepreneur and author of A Knock at Midnight: A Story of Hope, Justice, and Freedom, about her role in the fight to free incarcerated people from these sentences. They talk about high profile clemencies, how life sentences are handed down even without physical evidence of drugs, and the wealth of Black love. You can follow us on Twitter @NPRItsBeenAMin and email us at samsanders@npr.org.