"This book gives an excellent grounding in magical self-defence." -Advert at Flourish and Blotts The Dark Forces: A Guide to Self-Protection is a book authored by Professor Quentin Trimble. This book provides insight and information on various dark creatures, it also contains some defensive spells, such as the Knockback Jinx. It was a required textbook for both first year and fourth year Defence Against the Dark Arts students at Hogwarts School of Witchcraft and Wizardry. This book was an item on the 1991 school list of things needed.

Harry Potter spreuken in alfabetische volgorde