Possible Clues:

• Rare slip potentially produces act of retaliation
• Clipped response about a gentleman mounting comeback
• Revenge
• Rook is taken after pawn in substantial counterattack
• Publicity is part of true revenge
• Formula Sir Percival kept back for revenge
• 'Eye for an eye' act
• Pearl, wronged, turned the master in to get satisfaction
• Rare slip in play results in retaliation
• Retaliation is concerning gangster - putting in jail not on