It does indeed look like a Physalis sp. FataMorgana

One of the native Lespedeza.

I suspect either a squirrel or raccoon tore the screen and then the black snake took advantage of it. Squirrels are known to tear through screens, although I don't know what they would be after in your courtyard. Raccoons would be attracted to the water and certainly the fish and could easily tear through it. The snake is probably after the lizards and maybe even the fish if they are small. What makes you think it's nocturnal? Squirrels aren't night feeders but do move around in their nesting places at night, have you found any nesting material? Raccoons and snakes do hunt at night.

well if you've been to tobaccoville and dobson, you've definately been up my way. i live in king. i work in high point so we've probably passed each other numerous times coming and going on 40, 311 and 52! high point is all abuzz now with Fantasia mania! its pretty cute. if i can get these darn impatiens to germinate and grow i'll be sure to post a picture, otherwise i'll try again next year and just keep trying until i get some of them. i do think they're gorgeous! keep in touch... maybe we can get together for a swap or something sometime, and thanks for all of your help.