Castle: The Blue Butterfly - Noir Writer Illustration #1652087 (License: Personal Use)

This black-and-white illustration depicts a classic noir-inspired writer wearing a fedora and trench coat, gripping a fountain pen with intent, as he glances over his shoulder. Behind him, a circular brick wall frames a small window with a starburst crack, while bold lettering spells “CASTLE” above and “THE BLUE BUTTERFLY” below, suggesting a title or series identity. The linework evokes comic book aesthetics and pulp fiction covers.

Used as a cover image, banner, or promotional graphic for a mystery novel, indie comic, or writing blog; targets readers and creators interested in noir, detective fiction, or retro-styled storytelling.