Inspector Will attended the call from Mr. Andrews, and entered the closed display room of the magnificent Andrews' house. With a quick sweep of his eyes, Inspector Will noted that the room was round (no corners), to the left there was a waiter, next to him a little beverage table with 5 glasses filled with chopped ice and some bottles, to the center there was a little table with a small open chest (obviously something was missing), to the right there was Mrs. Rovinsky in front of a Renoir, then there was Mr. Romano in front of a Picasso, and then Mr. Lafi, in front of a Rembrandt. Beside Mr. Lafi was Mr. Andrews. No more furniture nor appliances than those were in the room. Mr. Andrews explained:
-Inspector Will, I invited my guests to show them my treasures. First, I showed them the beautiful collection of diamonds that were in the chest and are now missing. And then each one of us went to admire my paintings.
-My guests are standing right where they were at the time I discovered the disappearance.
-As you can see, we all have our backs to the diamonds' table to see the pictures. And everyone was admiring the works so attentively, that no one paid attention to the others. Then I turned back and the diamonds were gone.
Inspector Will asked about the attendant.
-I called him for some refreshment. He was serving the glasses, we all heard him chopping the ice.
-I personally searched him. He doesn't have the diamonds.
-I cannot search my guests. Nobody has left the room. And there's no place to hide the stones!
Inspector Will calmed down the poor Mr. Andrews and then solved the crime easily, because the diamonds were in plain view.
Where were they, and who was the thief?