of course, we all know it's someone in the inner circle. >> if we had known those kind of circumstances earlier in the investigation, i'm sure he would have come into our radar sooner, but again, we can always look back and wish we had done things differently. >> a few months before he confessed, eric copple patched things up with lily prudone, and the two married. in a bitter irony, the couple asked arlene allen, adriane's mother, to be part of the wedding with ceremony. lily claims she never suspected eric was the killer. in december of 2006, eric copple pleaded guilty to two counts of first-degree murder. he was sentenced to life in prison without parole. had he not pled guilty, copple would have been eligible for the death penalty. >> and i think that was a very real possibility, accepting a