i think you knew that was coming. >> carl carlson was charged with second-degree murder. t, carl used a walker claiming old injuries were getting the best of him. his attorney said police co-horsed carl and the judge denied the defense notion to suppress and the trial was set for november 6th, 2013. all these years, mike carlson had misgivings about carl's behavior but after watching the interrogation video, his worst fear was cemented, his own brother was a killer and now, he had a new fear. >> as the trial approached, did you think that the evidence was overwhelming and that it was pretty clear carl was going to go away? >> i was probably more scared as the trial approached that it wasn't a slam dunk. >> coming up, a surprise inside and outside the courtroom. >> we've been waiting just about 24 years now for some closure. >> now, a haunting new question. had carl carlson killed before? >> telling me about the fire with your first wife. >>> in the winter of 2012 as the seneca county district attorney was preparing to prosecute carl carlson for the murder of his son levi,

carl was stationed in the air force. when he was discharged, they came to his home to make a life. was she a good fit to the carlson family? >> she was. she would give it out as well as take it and laugh on the way. >> sit there. >> they were a cute couple, christina the little cheerleader from california, carl the rough and ready country boy. christina's sister collette liked the way carl made chris laugh. >> they would laugh and joke and this big barrel chested guy and 4'1 4'11". >> he got work and it wouldn't be long before he and christina had three kids, aaron, levee and katy. >> she would be on the floor, teaching them, instructing them or calling them and it wasn't just her kids, it was all of our kids. >> look at those two lovely people over there. >> christina seemed happy, but carl wanted more than a life working and christina's father offered a ticket out. a job with a future working in his heating and air conditioning company. >> i said if you ever need a job, come on out to california and you'll have a job. you can work with me. >> so they moved all the way across the country to murphys. carl found the