What could be more fun than a masked Mardi Gras ball at a so-called haunted mansion? George brings her digital camera, insisting that she's going to bust some ghosts. I'm just looking forward to a night of dressing up and dancing with Ned and my friends. <P> Soon the fun turns freaking, though -- things go haywire and everyone starts to wonder if the ghost stories could actually be true. But when Deirdre Shannon's antique tiara is snatched, I'm certain the crook is a guest, not a ghoul.