I had no idea what the plant was but my dh says he thinks it's a pomegranite. I googled the pomegranite and I also think that may be what your mystery plant is.

Dancey

Looks like a jerusalem cherry.

Here is a link that might be useful: Jerusalem cherry

It's not a pomegranite. Trust me on that.

It might be a Jerusalem cherry. Are you where it wouldn't freeze during the winter?

Hi all: Thanks for answering.

Yes--I believe it's a "solanum pseudocapsicum" or Jerusalem Cherry. Might be variety "Red Giant" based on info in my garden ID book.

PeaBee4: I'm here in Middle TN, it can freeze, but the lady told me she does nothing to them and they come back year after year. So, I guess our temps are not a problem for them.

I guess by now you have figured out that it IS poisonous.

you consider "severe discomfort if digested" (as my ID book states) & other unpleasantries that will take place! :-)

I'll try my best at growing it, but will pass up any attempt at tasting!

Thanks again. CFB