zach sklar was one of them. >> why did you feel the need to be there? proven guilty. i saw -- nothing that would lead me to believe that this could possibly be true. and so i went there to support him, to show him -- particularly because he is dominican in a very white area, that there are people who will support him. >> but the prosecution's case would be difficult for gil's friends to hear. the state's theory, gil killed tom because he wanted linda all to himself. the special prosecutor summed it up on day one. >> ladies and gentlemen, obsession. >> it was an obsession furthered by manipulation and deception. >> to show jurors just how obsessed they believed gil had become, prosecutors read emails he wrote to linda. >> "i am not leaving you. not today, not tomorrow, not ever. i am not going to let you just walk away from me. never." >> linda took the stand and testified about how the affair began and lasted until right before tom's death. tom's parents couldn't believe the details they were hearing. >> we just assumed that it was a one-time episode be