ELKHORN - A man charged with murdering his wife by poisoning her remains on trial in Walworth County. Friday, a computer expert testified “poison” was the number one word searched on the Jensen’s home computer. That testimony could really hurt the defense. A computer expert testified “poison” was searched over 2,000 times on the Jensen’s home computer in the months leading up to Julie Jensen’s death. The word “poison” was searched 2,100 times before Julie Jensen died. Forensic Computer Expert Rhonda Mitchell examined the Jensen’s home computer. She says anti-freeze and botulism were also searched a lot, along with a Web site that teaches people how to make bombs. The biggest blow to the defense could be the time of day the searches were done. Prosecutor Robert Jambois: “Very little computer usage when Mark Jensen was at work and Julie Jensen was at home, correct?” “Correct,” Rhonda Mitchell said. Mitchell testified the computer was barely used between 9:00 a.m. and 6:00 p.m., the hours Mark Jensen was at work. Suicide was another word searched on the computer. The defense will argue that despite the time of day the searches were done, Julie Jensen could have been the one online. Prosecutor Robert Jambois: “The only email communications on the Jensen home computer that you discovered were between Mark Jensen?” “Correct,” Rhonda Mitchell said. Mitchell testified the majority of the emails were between Mark Jensen and his mistress. The two talked about running away together. “She said, ‘you asked me if I wanted to run off with you. I’d love to, but there are issues that we have to deal with. I am not sure how I’ll deal with my issues. Do you know how you’ll deal with your issues?’” Mitchell said, reading an email between Mark Jensen and his mistress. The prosecution hints that "dealing with issues" means figuring out what to do with their spouses.