A rebid of only three spades over North's two no trump would have been a sign-off, so Fishbein was correct when he jumped to the spade game. With good controls and high honors in spades, North's five-spade bid was not unreasonable. East, who had been considering the wisdom of doubling a four-spade contract, could not resist the temptation now—after all, this was a rubber-bridge game at the Mayfair and the stakes were more than mere master points. He expected that his trump holding alone would defeat the contract, and when he saw the spade queen in dummy he knew he had three trump tricks. As things turned out, his spades were too good.
A trump lead would have set the hand, but it would be hard to find fault with West's choice, the jack of hearts. Fishbein never even considered finessing the heart queen in order to get rid of his club loser. He knew that the trumps were stacked against him and a successful heart finesse was unlikely to improve his chances. Instead, he went up with dummy's ace of hearts and commenced reducing his own trump length by trumping a second heart lead. Three high diamonds had to go through, and he breathed a sigh of relief when they did. Next he ruffed another heart, cashed the king and ace of clubs and led dummy's last heart, ruffing while both opponents helplessly followed suit.
East was now reduced to the four powerful trumps from which he had expected so much, and they were enough to prove his downfall. When Fishbein led a third round of clubs, East had to trump his partner's trick. Worse than that, he had to lead from his ace-jack-10 of spades, obviously a hopeless position. If he cashes the spade ace, declarer wins the last two tricks with the king and queen. If, instead, he under-leads the spade ace, declarer wins his 10th trick with dummy's queen and leads from dummy through East's ace-10.
East's double was a bad one, for it was a tip-off that helped Fishbein time his play perfectly. Without it, the normal line of play would be to lead up to dummy's spade queen and hope to lose not more than two trump tricks. But I suspect that even the merest flicker on the part of East would have led Fishbein to the winning play. He has an uncanny way of finding it.