it was may 2009, the last day of school before summer vacation in effingham county. heidt over to arrest him, he was driving his dead brother's white truck. he had his brother's children's id cards in his wallet. the truck was full of craig's belongings. and when school got out, craig and his brother's wife and kids were all going to move to south carolina. to the cops, this was more than just a fling. this was coveting, biblical stuff, jealousy, anger, lust and greed. murphy: he had just stepped right into his brother's life, basically. mr. michael muldrew: exactly. murphy: took the wife, the house, the truck, the kids. mr. muldrew: the money. he had become his brother. dennis murphy: coming upa son and brother on trial unidentified man #1: i see no evidence in this house of multiple shooters. one person taking three shots is what i see. dennis murphy: and a mother takes the stand. the dramatic tale about that deadly night. ms. l. heidt: i heard a very loud noise or blast. and i must have blacked out. and i woke up praying. i said, god, if we're going to do this, i

effingham county had never seen the likes of what happened to the heidts and hopes never to again. i'm arod covlining, andcalls 911 and says." that his wife appears dead. he said that anna found her in the bathtub. i've never seen my son shellshocked. andrea canning: it was a case tailor-made for the tabloids. you have this beautiful woman, a tall, handsome guy, greed, infidelity. he's sleeping around with other women. andrea canning: a failing marriage with millions at stake. he didn't have any money of his own. this is getting ugly. yes. she said, we're broken. and she cried. andrea canning: was it a fall in the tub or a husband's fall from grace? we believe that it was a staged accident. he was adamant about his innocence. the case bothered me for a long time. he said to me, you have to help me kill my parents. you can't even think about the magnitude of it all. [theme music] hello, and welcome to "dateline." shele and rod covlin met and married in a matter of months. soon, they had two young children, a tony manhattan address, and a nest egg worth millions. then on the brink of