sources in california told us that once carlson was back in new york, investigators begged their bosses to let them follow him for questioning. they said that they were told no, the county couldn't afford it. >> the investigators wanted to go to new york, congress county wouldn't let them spend the money. >> just weeks after they left, colette learned that carl had taken a 200,000 dollar insurance policy on christina's life. and the policy paid off. colette came to believe that carlson killed christina for the same reason he killed levi. meng. two decades after christina's death, carl carlson dueled with detectives in that interrogation room, he suddenly had to face questions about that long ago fire with a well prepared jeff arnold. >> tom was telling me about a