I agree it is a nicely developed story, one that holds one’s interest, deftly written and uses the prompt in an effective way. But I also agree that there is something missing — and too many red herrings. I like stories that don’t spell everything out. I don’t mind when the writer assumes I am smart enough to figure things out. But I don’t like NOT being able to figure things out because there is not enough information to make a reasonable assumption. I admit it may be my limitations in this case, but I am really not sure. Bottom line: a fine story, almost perfect!