John Constantine, Hellblazer: Haunted

Warren Ellis and John Higgins bring a sharp, unsettling edge to this 2003 DC one-shot, a standalone Hellblazer tale that plunges John Constantine into a grim London mystery. The story hinges on a ghostly plea for help from a dead woman, forcing the chain-smoking magician to confront the violent secrets buried in the city's past. It's a tight, atmospheric thriller that distills the series' signature blend of urban horror and cynical wit into a single, potent issue.