Pen and ink illustration, inspired by Edgar Allan Poe, featuring an open-beaked, squawking raven perched on a pile of ancient books. A full moon veiled by wispy clouds casts an eerie, gloomy glow, enhancing the gothic horror atmosphere. The scene is rendered with extreme and intricate detail, capturing the intense and moody ambiance. The raven, with deformed irises and pupils, peers with a haunting, cross-eyed gaze. Its claws display mutated features, with extra fingers adding to the unsettling feeling. The background is dramatically illuminated, yet shrouded in darkness, emphasizing the suspenseful and mysterious aura. The composition is cropped to focus on the central subjects, avoiding any modern distractions like signatures or text overlays. The raven's long neck adds a touch of surreal, otherworldly charm, maintaining the spine-chilling essence of the piece.