Assassin fantasy *Killer Quill* promoted

*Killer Quill* was released as an eBook on November 15, 2025, and as a paperback on November 18, 2025. An audiobook and hardcover edition are forthcoming. The book is published by Three Frontiers and is part of the *Colors Eternal* series within the *Hymber in Wisteraverse* world. The story follows Quill, who is murdered and resurrected with the power to transform colors into animate objects using her quill. However, the quill feeds on the souls of her victims. Dr. Shida Ketzer is a polyglot, scientist, and informatics Ph.D. who resides near the borders of Germany, France, and Luxembourg. *Wisteraverse* is described as the product of endless writing and revisions. *Killer Quill* contains non-gratuitous violence and deals with mature topics that may be triggering, including descriptions of torture and mentions of an adult villain having been intimate with a minor. The book also contains mentions of childhood trauma, including the death of a parent and physical abuse.