I have to thank you all for the good advice. I have hidden the duct tape, scissors, and knives, and recalling a recent post by Busy Mom, I have stocked up on bourbon Benadryl, just in case.
I think they are trying to catch my off-guard. They let me sleep until after 8:00 this morning, and were very good while I was in the shower. Ella even ate the breakfast I made (which was a new recipe I was trying - she isn't usually open to new things, so I find this suspicious.)
I still hear whispering, and Little Man gave me an evil grin while I was mopping the floor earlier. There is something going on here....