oh, and mifflin wasn't finished.t of the fire, the detective told leidel, scott purk had casually added a tantalizing detail to his life story. scott, just out of the blue, says to me, well, his first wife had committed suicide in 1985. and she was pregnant, nine months pregnant. as if like, you know, not only is my house in embers, but this isn't even the worst thing that happened to me. i was shocked, and it made me wonder, ok, and now i need to look into this. and i'm looking at someone who i believe is an arsonist. now i'm wondering, ok, was he a murderer? josh mankiewicz (voiceover): the two lawmen decided to pursue parallel investigations into scott purk. leidel would take lead on the arson case, mifflin, the suicide. you guys know each other and you get along. he knows exactly what he's doing. we do work very well together. we have a great relationship. josh mankiewicz (voiceover): mifflin knew his case had the highest hurdles. not only had scott purk's first wife, meg purk, died 24 years earlier, but she had