duyst. >> david duyst was arrested and charged with first degree murder.continued to maintain his innocence. he said when he found sandy, she was coughing, which explained how her blood got on to his shirt. it would be up to a jury to decide if david duyst was lying or telling the truth. >>> prosecutors didn't have to look very hard to look for the motive for sandy duyst's murder. they were heavily in debt. >> all the income that was going into the duyst home was absolutely going out in expenditures. there was no money left over. >> david duyst was an insurance agent and he had written a $500,000 insurance policy on sandy's life, which would pay even in the event of suicide. and prosecutors also learned that david's lover, his secretary, was insisting he leave sandy immediately. >> by having her out of the picture, being dead, as opposed to just divorcing her, he avoid paying alimony, child support, and adding further financial whoa to his particular situation. the motives were the oldest ones in the book, money and women, and he had both of them. >> with

david duyst and sandy bose met in high school and fell in love.hey went to the same college, got married after graduation and started a family. >> the duysts were church-going people, pretty conservative and well thought of.