"I wound up putting her on the stand in a different way," he [Balfour's lawyer, Zwerling] says, "so people could see the real Lyn -- vulnerable, with no guile, no posturing."
What Zwerling did was play two audiotapes for the jury. One was Balfour's interrogation by police in the hospital about an hour after Bryce's death; her answers are immeasurably sad, almost unintelligible, half sob, half whisper: "I killed my baby," she says tremulously. "Oh, God, I'm so sorry."
The second tape was a call to 911 made by a passerby, in those first few seconds after Balfour discovered the body and beseeched a stranger to summon help. It was seconds later that the passerby called 911.
The tape is unendurable. Mostly, you hear a woman's voice, tense but precise, explaining to a police dispatcher what she is seeing. Initially, there's nothing in the background. Then Balfour howls at the top of her lungs, "OH, MY GOD, NOOOO!"
Then, for a few seconds, nothing. Then a deafening shriek: "NO, NO, PLEASE, NO!!!" Three more seconds, then: "PLEASE, GOD, NO, PLEASE!!!"
What is happening is that Balfour is administering CPR. At that moment, she recalls, she felt like two people occupying one body: Lyn, the crisply efficient certified combat lifesaver, and Lyn, the incompetent mother who would never again know happiness. Breathe, compress, breathe, compress. Each time that she came up for air, she lost it. Then, back to the patient.
After hearing this tape, the jury deliberated for all of 90 minutes, including time for lunch. The not-guilty verdict was unanimous.
http://www.pulitzer.org/works/2010-Feature-Writing