Nothing exemplifies the keen competitive spirit of tournament bridge better than the penalty double. Anytime a final contract is doubled, the stakes are raised not just the score but the implied mano a mano challenge. When you acquire a feel for opportunistic penalty doubles, you have added a potent weapon to your arsenal. Your courage to double freely and wisely will make you a respected and feared opponent. And if the opponents occasionally make a doubled contract against you, be consoled by what a mentor taught me: if they never make a doubled contract, you aren`t doubling often enough. This book, like my books on demon doubling and 3NT, is intended for the intermediate and advanced intermediate club and tournament player.