>> i kind of thought selfishly. >> reporter: jermeir confessing under oath the shameful sin he'd kept hidden for so long, his office affair with shannon crawley. he even revealed that when he heard something had happened to denita he immediately suspected shannon. >> and one of the things that popped in my head based on my recent interactions with shannon was that maybe she had done something. >> he told everything on the stand. >> reporter: but he didn't hold back? >> no, he really didn't hold back. the story is out. so you have to go ahead and tell the truth because if you don't you look like a liar now. >> reporter: so in that sense, jermeir did do the right thing? >> he did. >> reporter: the defense argued shannon was being framed for a murder jermeir alone committed. >> shannon crawley's lawyer was trying to paint jermeir as a crooked cop, you know, everything kind of elevates shannon crawley as she couldn't do anything like this. it has to be this bad cop over here.