Hoe many books are there in the skuldugery series?

There are 12 books in the Skulduggery Pleasant series.

Here is a list of them in order of publication:

1. Skulduggery Pleasant

2. The Last Stand of Dead Men

3. The Faceless Ones

4. The Dark Days

5. The Demon Diaries

6. The Mortal Coil

7. The Sanctuary

8. The Killing Moon

9. The Dying of the Light

10. The Lost Boys

11. The Blazing Sun

12. The Midnight Hour