Here are the answers for the Halloween-themed crossword clues:
**Across:**
4. **Ghost**
7. **Trick-or-treat**
9. **Skeleton**
10. **Cauldron**
12. **Werewolf**
**Down:**
1. **October**
2. **Pumpkin**
3. **Witch**
5. **Frog**
6. **Vampire**
8. **Bat**
11. **Boo**
