Last apprentice (Companion books)

The Last Apprentice series follows the terrifying adventures of the Spook's apprentice, Thomas Ward. But Tom's is only one story. There are others. . . .

The Spook himself was once an apprentice. How did he begin his training?

And what of Alice, the young witch who is Tom's closest ally? How did she overcome her dark past?

What did the witch assassin Grimalkin do to become the most deadly and feared witch in the county?

And,

...

Ready to be presented to the last apprentice, Tom Ward, the spook's notebook contains instructions for vanquishing boggarts, witches, the unquiet dead, and other dark creatures and spirits.