but -- >> how did the lie detective test go for narcy? >> she flunked it all the way through? >> yes. >> when the cops were finally done with the two of them for the night, may finally confronted her mother. >> i asked her to her face -- >> what? did you have something to do with this? >> i did. i got in her face. and they had pictures of the crime scene and i smacked them in her face -- >> you think that she killed ben junior? >> i think that something to do with it. i didn't think she did it herself, personally. >> the cops had only started to peel back the many layers of the novack family story. there is still so much about these people they did not know. >> coming up -- >> i see my mother coming at me with a crowbar. >> when dateline continues. when dateline continues before it starts for all-day, all-night protection. can you imagine 24 hours without heartburn? nurse mariyam sabo know 24-hour hydration. no parabens, dyes, or fragrances. gold bond. champion your skin. enamel is the hardest tissue in the body. it's a protective layer o