Part II: Through the cracks. For more than 40 years, America’s deadliest serial killer went undetected. He claims to have killed at least 93 people, nearly all women, many of whom remain unidentified. He got away with it by preying on those on the margins of society whose murders police failed to solve. Wesley Lowery, Hannah Knowles and Mark Berman share their gripping investigation in The Washington Post. Tomorrow, join us for Part III, the series' final instalment, where we find out how America's deadliest serial killer was caught, charged and tried — but never stopped. Just search "America's deadliest serial killer".