he's like, "she just needs kay out of her life bad." you know? stuff like that. >> reporter: now that was a shocker. investigators had had their eye on becky's other son michael from the get-go. >> i was surprised to hear it that way. i was surprised to hear that it was michael, really 'cause, you know, i've been learning so many things about michael and -- and his past and all of that. >> you haven't had any discussions with michael about -- like you've had with -- with christopher? >> not like with christopher, no. no. 'cause me and christopher are a little bit closer than me and michael. >> do you know if she ever talked to michael about it? >> no, i don't. >> have a seat right here. >> reporter: still, edmunds decided it was time to bring in michael for a second round of questioning. and this time, the investigator turned up the heat. >> michael, it's over, okay? i'm not playing games anymore.