Not only did she raise his children and have quite a accomplished corporate career, dinner dinner for 50 . But in the wee hours of a winter night i found her at the base of the stairs. Reporter Kathleen Peterson, dead. Reporter Michael Peterson, under suspicion. Then a bombshell revelation about another woman, from his past. Liz was on the floor, and there was a puddle of blood under the staircase. Two women that appeared to die the same way. Two Women Associated with Michael Peterson. Reporter what are the odds . Yeah, what are the odds . Reporter at trial, one expert this is the scene of a beating. Reporter would make a slamdunk case for petersens guilt. The jurors were captivated by his testimony. But were his dramatic experiments, legit . Its designed to get a result. Its not scientific at all. Michael peterson on the twist that might finally lead to the truth. The most difficult decision i ever made in my life. Down the back staircase. Hello and welcome to dateline extra. Im craig