eric was also defiant. >> it wasn't eric naposki who shot bill mclaughlin. this is a fact. wrong. i'll tell you right now on my children, he's just straight wrong. >> reporter: did eric kill bill mclaughlin? did he conspire with nanette? or was matt murphy in over his head? up to a jury, soon. >>> coming up -- first, they had to face trial where nanette's lawyer had an unusual defense. >> in court, you called your client a [ bleep ]. >> i did. just because of the way you treated people in life did not make you a murder. >> would the jury agree, when "dateline" continues. urder. >> would the jury agree, when "dateline" continues otect your t with the #1 name in flea and tick protection. frontline plus. trusted by vets for nearly 20 years. frontline plus. at walgreens, we understand the speed of life never slows down. that's why we're helping you get the care and attention you deserve even faster. that's our promise. now, you can skip the line with walgreens express, get in and out quickly with 24-hour locations, or have your prescriptions delivered whenever you need us, we'r