. >> reporter: sarasota county lead homicide prosecutor, karen fraivillig, believed danielle manipulatedulative person, and she was able to manipulate michael minor, and there's a dead man because of that. >> reporter: the question now before the prosecutor, could she prove it in court? >> coming up -- will one lover betray another? >> we were hoping that he would contact us and said, hey, i want to tell you the truth. >> and the lover left behind ponders what might have been. >> was he the one? >> he was one, without a doubt. he still is the one. ♪ boogaloo, doing the flow. ♪ c'mon baby, go go go! degree motionsense. ultimate freshness... with every move. the more you move, the more it works. degree, it won't let you down. welcome to my she shed. where high heels are forbidden by royal decree of the queen. me. and my treats are just for me. fiber one 90 calorie brownies. allll mine. "how could there possibly be this many blues?"alize. don't worry. at lowe's we guarantee you'll always love your paint, or we'll replace it. get paint and primer now starting at only $17.98 and save an extra

>>> of all the homicides karen fraivillig has prosecuted, she found the case of sam dreher's murder especiallye that in court, fraivillig felt she would need something she didn't yet have -- a statement from michael saying danielle acted as his accomplice. so she waited, thinking time would compel him to come forward and admit danielle was involved. he never did. michael maintained danielle played no role in sam's murder. was this possibly a twisted act of chivalry? >> i think that certainly one of his motivations, if not his sole motivation, was trying to protect the woman that he loved. >> reporter: did you say to him, why are you protecting her? >> yes. and he said, i'm not. i'm not protecting her. >> we were hoping he would contact us through his lawyers and said, hey, i want to tell you the truth. i want to tell you what part she had in it. that never happened. >> reporter: 2 1/2 years after shooting sam, michael minor agreed to plead guilty to second degree murder. >> and it will live with me forever, and it will haunt me forever. >> reporter: in exchange for his plea, michael received a