Thanks for the link Nina.
I think that KCPD has the date and time that Lisa was last seen listed as Oct 3, 2011 about 6 p.m. for a reason. They don't have any evidence for it to be any earlier than that.
For myself I have a hard time trying to understand DB/JI's actions if something had happened to Lisa on Sunday or earlier on Monday.
Why wait until Monday night to claim an intruder came and took Lisa if something happened on Sunday? Why not just do it on Sunday night. Wait for an alibi for Jeremy? Maybe, but that doesn't help Debbie. Need more time to stage the kidnapping story? Other than the window screen, missing cell phones and lights being on, there was little staging done. Why wait a whole day to do so little?
What if something happened to Lisa earlier on Monday? Then why have your next door neighbor over to your house? Seems a bit risky to me. You decide to have a little party with her and another neighbor while at the same time making sure Lisa's brothers don't notice that she's missing. Possible but not likely.
It's things like this that make my doubt that 6 p.m. on Monday timeline is incorrect. JMO.