The Petersons seemed the ideal couple, well-respected, prosperous, and happy. All that came crashing down in December of 2001, when Kathleen apparently fell to her death in their secluded home in an exclusive area of Durham, North Carolina. But blood-spatter evidence and a missing fireplace poker suggested calculated, cold-blooded murder. Her trusted husband, Michael, stood accused. To bolster their case, prosecutors introduced evidence at trial that sixteen years earlier, Peterson was the last person to see his neighbor alive before she was found dead at the bottom of a staircase in her home in Germany.

Attending the trial and having intimate access to the families and trial exhibits, award-winning journalist Diane Fanning's Written in Blood spins a heart-wrenching true crime tale that's been the subject of an acclaimed HBO TV documentary, "The Staircase." Hear information not revealed in any recreation.