no, said lonnie lancto. not even close. >> with john, none of those things existed.unity to drink to excess, to gamble to excess, to be angry, to be upset. and he -- >> he was free to do whatever he wanted now? >> yes, absolutely he was. >> we reminded lonnie of what cara and the therapist had told us. that he was in a downward spiral, getting worse and worse by the day. that he was actually suicidal. did you see any evidence of that? >> absolutely not. he was not suicidal. he was happier than he's been -- ever that i can remember. >> i was excited. and it was just, like, cool, you know, like, this is -- this is the dad i want all the time. i gt to see, like, my real dad. and it was great. sorry. >> that's okay. >> i've just never seen him so happy as he was. >> happy for the three weeks after he moved out, and then he was dead. what was a homicide detective to make of all that? coming up -- >> i told him to take >> a startling theory. >> i think the first words were that it was a setup. she sent me up. >> when dateline continues. hen dateline continues our new scent