Check your local comic book shop for Scooby-Doo, Where Are You #52 , which came out today.
Here's the description:
At a local Renaissance Faire, people come from far and wide to pretend they’re in ancient times – and they flee far and wide when the ghosts of Renaissance-era knights appear to terrorize the faire! Can Scooby and the gang uncover the truth behind the ghosts? And can they survive their duels and jousts that it’ll take to unmask the regal wraiths?