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The evening of March 6, 1990, seemed ordinary for single mother Donna Willard. Her three children went to bed and her fiancé Tom Tyrell planned to come over later that night. But when a knock came at the front door of her Southwest Philadelphia home, she found herself instead face to face with a hooded gunman. He shot Donna twice, killing her instantly, with her twelve-year-old son witnessing the murder from the top of the stairs. For months, the hunt for her killer led investigators to a maddening series of dead ends until months later, when the case broke in an astonishing direction. Loraine Ballard Morrill speaks with TRUE CONVICTION host and undefeated homicide prosecutor Anna-Sigga Nicolazzi about her travels to key locations in the case to reveal how prosecutor Lee Dobkin and lead detective Lt. Lee Witte untangled the truth about who killed Donna, and to retrace step-by-step the journey to justice for her family.