Franklin is MIA

I came home from work to find that the kids had taken Franklin, our pet turtle, out in the yard to play. They *also* went to bed w/out taking him back inside. With the possum prowling around, I'm not sure he was even around to be found by the time I was done w/ work, but I scoured the yard w/ a work light and an extension cord. No luck. He's still MIA. He's been part of the family since Feb '05, predating Park. Damn.