PxJ Comm October '09 Challenge response.

The challenge's Prompts:

( 1. Darkness )
( 2. Black cat )
( 3. Ghost )
( 4. Pumpkins )
( 5. Costumes )
( 6. Crescent Moon )
( 7. Orange )
( 8. Trick )
( 9. Spider webs )
( 10. Fog )
( 11. Treat )
( 12. Graveyard )
( 13. Thirteen )