Three estranged sisters — a retired Army investigator, a Houston attorney, and a Brooklyn true-crime podcaster — return to their late mother's coastal South Carolina home and find a locked room none of them knew existed. Inside: a 1977 murder tape, a bribery ledger, and a missing man's notebook that drag them into a decades-old conspiracy powerful people will kill to protect. From Savannah stakeouts to a Brooklyn studio shooting to a live-streamed showdown, What Mama Buried is a relentless, action-packed mystery about family, buried truth, and the price of digging it up.