There are 2 books in the Return to Groosham Grange series.
The Return to Groosham Grange series does not have a new book coming out soon. The latest book, The Unholy Grail (Book 2), was published in August 2009.
The first book in the Return to Groosham Grange series, Groosham Grange, was published in April 1988.
The Return to Groosham Grange series primarily falls into the Horror genre. This middle grade series was written for ages 8-12, but can be enjoyed by older readers as well.