Group 1 - The core theme revolves around the intertwining of mystery and personal struggles, as characters face unexpected events that challenge their lives and relationships [2][4][5][9][20][22][25] Group 2 - The narrative in "The Coffin Museum Incident" highlights a former bestselling mystery novelist's attempt to regain his creative spark after a tragic incident, leading to a complex plot involving murder and deception [2] - "Today Nothing Happened in Class" explores the impact of past events on present relationships, as a young woman reflects on her life and the mysteries surrounding her upbringing [4] - In "The Case of the Red-Haired Victims," a detective investigates three seemingly unrelated murders, uncovering a deeper connection among the victims [5] - "When I Opened the Counselor's Dormitory Door" revisits past campus mysteries, revealing hidden connections among seemingly unrelated events [9] - "The Disappearance!" presents a suspenseful narrative involving memory loss and mysterious occurrences, emphasizing the psychological aspects of the characters' experiences [13] - "Mary Shelley: Shadows of the Past" delves into the author's life, exploring themes of despair and creativity that led to the creation of "Frankenstein," reflecting on societal constraints [15] - "Have Me Guard You" narrates a woman's emotional journey through a virtual relationship, culminating in a real-life encounter that brings unresolved issues to the forefront [22] - "The Transformation of Sherlock Holmes in China" provides an academic exploration of the cultural impact and evolution of the Sherlock Holmes character in Chinese literature and media over a century [25]