GameTap now offers a new episode of American McGee's Grimm, kicking off the second season of the adventure game series with a dark take on the world of fairy tales. The new episode is The Master Thief, which is free through tomorrow to celebrate Halloween. Here's a description: "Once upon a time, fairy tales were valuable cautionary yarns filled with dire warnings and sage advice. However, over time, the stories have become so watered down with cute woodland creatures and happy endings that they have lost their true meaning and purpose. No more! Happily Ever After ends now! When the Master Thief is challenged to steal three unobtainable items, he has to use every trick in the book to save his life. Will things play out according to his fairy tale plan? Not if Grimm has anything to say about it!"