Everyone can do something clever

Margot Asquith, whose husband was the British prime minister from 1908 to 1916, wrote, "He's very clever, but sometimes his brains go to his head."

That's clever! At the bridge table, you gain most of your good results because the opponents make mistakes, rather than you do something clever. However, occasionally deals come along in which more than one player can be canny.

In this deal, South is in four spades after East opened with a weak two-bid in hearts. How should the play and defense proceed?