I only read "An Urban Legend Puzzle" for now, but I found it enjoyable enough. I don't agree fully with the logic though. When the father said (paraphrasing) "maybe the murderer only thought of the minor advantages and that's why he left it", the son says the father himself pointed out how clever the murderer was, and it would take a clever murderer to stay in the dark and hide in the room. I disagree. That doesn't take much thinking and is the most passive and easiest default reaction to do. I don't think you can discredit that first guy based on it.
That said, I did actually deduce it was the friend coming back later after the fact to commit the murder and thought the logic pointing to her makes sense. I don't think it's strong enough to be incriminating, mind you, but I thought it was strong enough to suspect her and was the original reason I suspected her as well.
Anyway, overall, I see why the person is praised for the Ellery Queen style logic, but I did not love the story. It was fine though and enjoyable and rational enough.
Uncertain if I'll read the other short mystery fiction. I don't usually like short mystery stories and prefer longer narratives, but maybe I will read them one day. Leaving review here for now for just An Urban Legend Puzzle.