look at this case, they learn levi karlsen had a life insurance policy and that his father karl was to leave money to. >> for me that was enough to re-open the investigation right there. >> it was the most terrifying time in my life. i decided that i just could not do it anymore. i couldn't live with karl anymore. i needed to get out of the house. shortly after i left is when law enforcement called me. >> first thing she said was, thank god you called. and then she said that she also had suspicions. >> they said they had a tip from a family member that maybe there was something more to levi's death. that's when we started working together with law enforcement.o regular basis. it was an ongoing process for months. >> i think she was almost kind of like -- almost wanting to be part of the police investigation team. >> i was watching a show where a woman was taping her mother, secretly, trying to get her to confess to killing her father. and i remember just thinking, i'm going to do that. i'm going to get a recorder and start recording my conversations with karl. i met karl in a busy re

karlsen. >> 911, what's the location of your emergency? >> i885 old farm road. >> okay. >> leviome to the home of cindy and karl karlsen at the request of karl. >> karl told me that levi was going to come out to work on an old farm truck that we had that day. >> while levi is in the garage working under that farm truck, karl and cindy are getting ready and dressed to go to a funeral. >> i went and got in the passenger seat of the car, and karl had told me that, i'm just going to go let levi know that i'm leave. it was just a minute or two. then karl came and got in the car. nothing seemed out of the ordinary. >> he and cindy leave to go to a funeral. >> we were gone for four hours. >> they return home. cindy first notices levi's car still parked in their driveway. she's kind of concerned. >> i went into the house and karl came up to the window and the door and started banging and saying, call 911, levi is dead. >> ma'am, what's going on? >> the truck fell on my stepson. >> the truck fell on your stepson? >> we just got home, and i don't think he's alive. >> you don't think he's