. >> mother of two, julie jensen, is found dead in her bed. >> the defendant is accused of killing hise julie by poisoning her with antifreeze. >> the circumstances surrounding her mysterious death would drag marital secrets into the light -- infidelity, porn, and poison. >> i've never had anything like it. this case is incredibly unique. >> the trial for mark jensen gets underway today in kenosha. >> we go inside the trial and inside the home in an unprecedented murder case. >> i was the d.a. back then in 1998. >> district attorney bob jambois is there the day julie jensen's body is found, just weeks before christmas nearly a quarter century ago. >> here we are today, 24 years, 1 month, 28 days after the homicide of julie jensen. >> and now there's a new twist in the case. >> in 2021, a judge overturning a key piece of evidence. >> jensen has maintained he is innocent and that his wife died by suicide. >> the tragedy of julie jensen -- and there are many -- even in death.scape gaslighting- >> julie jensen is gone. but will the jury get to hear her last words? >> "if anything happens t

julie jensen appeared to be living the american dream. in 1998 she was found dead in her bedroom just weeks before christmas and long hidden secrets began to emerge including a letter from julie herself. >> i pray i'm wrong and nothing happens. >> towards the end of november 1998, julie jensen writes the letter. she describes how she fears for her life, that she has a suspicion that her husband wants her dead. >> if anything happens to me, he would be my first suspect. >> she went on to explain that she felt that he had never forgiven her for the affair she had had and that no one should think she would commit suicide because she would never leave her boys. >> i would never take my life because of my kids. they are everything to me. >> she also included a photo of a post-it note that had seemingly a shopping list on it of things that were very suspicious. >> listed on that post-it note, drug supply, razor blades and syringe. could this be a kill list? >> this list was in my husband's business daily planner, not meant for me to see. i don'