Louisa Dent writes old-fashioned gamebooks, the likes that were very popular just before computer games took over the world.
Gamebooks are those kinds of books in which the pages are all scrambled up. You are the hero, and you will have to decide which way to go, which creatures to trust, and ultimately, how the story ends. You can make your choices by following the instructions at the end of each paragraph. You can also cast spells, collect valuables, and solve the puzzles which will give you clues.
For more detailed information on Louisa Dent's gamebooks, please read below and visit the official website for The Spellcaster Trilogy.