the indictment said that denise had conspired with brian winchester to kill his best friend mike. not guilty. but denise was the only one charged. what about brian? >> they told us that they had had to make a deal with the devil. >> some called it the deal of the century. >> really what they wanted was information of what happened to mike, where the body was. >> his attorney, tim jansen, said prosecutors had but one priority -- to find mike's body. >> they never said to him, "you have to give any evidence against denise. " >> but he would. in exchange for his testimony against denise, brian got 20 years for the kidnapping, and would not face murder charges. >> the state of florida versus denise williams. >> almost 18 years after mike williams disappeared, denise went on trial. she faced a mandatory life sentence if convicted. prosecutors has a lineup of witnesses -- fdle agents, fish and wildlife officers and mike's mother with her head barely showing above the witness box. and the jury met brian's first wife, kathy. >> did you suspect that brian winchester, your husband, was havi