Where can you read the 4th book to vampires assistant?

There is no fourth book in the *Vampire Assistant* series. The series currently consists of three books:

1. Vampire Assistant (2010)

2. Vampire Assistant: The Bite (2011)

3. Vampire Assistant: The Awakening (2012)

There are no plans for a fourth book announced by the author, Justine Larbalestier.