A new Hitchhiker’s Guide to the Galaxy book – the sixth – has been commissioned by the estate of its author. There are already five in the series (which began as a trilogy). If you’re not familiar with the books you may have seen the film, which was pretty good, in my opinion. The new book will be written by Eoin Colfer, who wrote the Artemis Fowl series. The original author of the Hitchhiker’s books, Douglas Adams, died in 2001.