Sighing, Klaus plunked his pilfered lawn chair down on the boardwalk and situated the cooler that he’d been dragging beside it. He swung the sheet of cardboard out from under his arm and set it against the cooler before stepping back to make sure it was legible.       I talk to dead people! the sign proclaimed in bold, black sharpie. A little cartoon ghost on the bottom right waved at viewers with an empty speech bubble.      Satisfied with the setup, he plopped into the chair to wait.