Spotless play in a spotless suit

William Shakespeare, in "Richard II," wrote, "The purest treasure mortal times afford is spotless reputation; that away, men are but gilded loam or painted clay."

Each suit in a deck of cards contains five honors: ace, king, queen, jack and 10. It also has nine spot-cards, the 10 doing double duty. The honors win most of the tricks, but having useful spot-cards, especially those 10s and nines, may be critical to success for one side or the other.

In this deal, North barrels his partner into six spades. How should South plan the play after West leads the heart jack to dummy's ace?