>> right. >> but michael's response didn't sway cindy lutz. >> i didn't believe him. think he was protecting her. i think he would have done anything for her. >> cindy believes that includes lying about danielle being involved in sam's murder. and cindy wasn't alone. >> do i believe that she was part of the murder scheme? yes. >> sarasota county lead homicide prosecutor, karen fraivillig, believed danielle manipulated michael to kill sam. >> she's a very manipulative person, and she was able to manipulate michael minor, and there's a dead man because of that. >> 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 the one without a doubt. he still is the one. >> when "dateline" continues. separately. tide pods with upgraded 4-in-1 technology unleash a foolproof clean in one step. aww, you did the laundry! it's got to be tide. ojust on