When a florida man won a multimillion-dollar lottery jackpot, he didn't realize he may well have been setting off a bizarre chain of events that would end with his murder. Here's abc's linsey davis... See More
When a florida man won a multimillion-dollar lottery jackpot, he didn't realize he may well have been setting off a bizarre chain of events that would end with his murder. Here's abc's linsey davis for our series, "crime and punishment." Reporter: Abraham shakespeare probably thought he was the luckiest man in the world when he won $30 million in the florida lottery in november of 2006. But his luck would change in a horrific way. And now, this woman, doris dee dee moore is on trial for his murder. Moore sobbed in court today, after jurors listened to audio recordings of her allegedly agreeing to a scheme in which another man would take the blame for shakespeare's death. It was the latest bombshell in a scandalous trial. There was a person he knew, who was willing to take the rap for his disappearance, for what I think reports say is about $50,000. Reporter: Shakespeare went from washing dishes and working garbage trucks in lakeland, florida, a suburb of tampa, to what he thought was the good life. But that quick pick ticket quickly turned his life upside down. I really would like my old fe back, where I could walk the streets, like a normal person. Reporter: He spent most of the money paying off mortgages for family, friends and some complete strangers. Many new friends came into shakespeare's life, including moore, who offered to help manage his money. In this home video, you can hear her asking him about his situation. You get tired of people asking you for money all the time? They don't take no for an answer. So -- Reporter: Three years later, the money had all but disappeared. And then, shakespeare did, too. He was last seen in april of 2009. But wasn't reported missing until november, when "nightline" spoke to the sheriff investigating the case. Where is abraham shakespeare? We have no idea where abraham shakespeare is. Reporter: On january 28th, 2010, police found shakespeare's body underneath a concrete slab, buried in the backyard of dee dee moore. You know, I'm not the one who shot him. I wouldn't hurt him. Reporter: Moore's maintained all along she's innocent. But the 40-year-old is now charged with first-degree murder, facing a mandatory sentence of life in prison. Prosecutors paint a picture of moore as a conniving manipulator. First, she tried to convince shakespeare's mother, elizabeth walker, that her son was still e. Orchating a phone call with someone pretending to be her son. Then, her ex-husband, james, testified he dug a hole with a backhoe and covered it up at his wife's request. Pay attention to what was in the hole? No, sir. Reporter: But the prosecution's star witness is greg smith, turned police informant. Moore is heard spinning an elaborate web of lies. Yesterday, he had the pains to forge a letter to shakespeare's mother, as if it was from her son, who happened to be illiter illiterate. It started with I'm gone. Don't worry about dee. If she goes to jail, she will be okay. The charges won't stick. Reporter: Today, the tape where she allegedly agreed to the scheme where another man would take the blame. It's going to be on him. Reporter: And perhaps, the most incriminating exchange, smith testified she drew pictures for him of how to find shakespeare's body. Telling him to get rid of it and burn it. She wanted me to burn the body. I had to give her, during that time, a list, also, of kerosene, and a water trough, such as you would give cattle water in, for me to be able to burn the body. Reporter: Yet another courtroom shocker. Detective david clark testified moore got so desperate after he caught her in another lie, she offered to have sex with him. She told me she could get a free room at the hard rock casino and would perform sexual acts with me. Reporter: In one of the conversations with smith, moore told him -- I've never done anything like this in my life. Reporter: She went on to say they would have to write a book about the experience when they turned 80 years old. If the prosecution prevails, she may be writing it from jail. I'm linsey davis, for "nightline," in new york.
This transcript has been automatically generated and may not be 100% accurate.