Book excerpt: Cape Cod has a rich tradition of local lore, stretching back to a time before the Pilgrims arrived. Ancient Wampanoag legends like Granny Squannit and Princess Scargo are as familiar as tales of pirates and explorers, including "Black Sam" Bellamy and Donald Baxter Macmillan. Felines often blocked "Cat's Alley" in pursuit of food from fishermen's boats. The remnants of Billingsgate Island can be seen at low tide, and visits from Jenny Lind and Helen Keller contrast with the mysterious stories of the "Lady of the Dunes" and New England's Dark Day. Author Robin Smith-Johnson shares historic tales of shipwrecks, murders, hauntings and more from the Cape.