Back from Rome, their ninth frantic escapade mercifully ended, Penny and Sir Toby decide it's high time for a rest. When they get the chance to return to Cape Cod, the scene of their second misadventure, they can't resist. But they soon have a dead body on their hands, and a puzzle-within-a-puzzle to decipher as well.

The Cape Cod Conundrum 2007, Countryman Press, New York, NY

ISBN-13: 9780881502930

Trade paperback

The Cape Cod Conundrum 1992, W. W. Norton & Company

ISBN-13: 9780881502442