The story is highly regarded for adding layers of complexity to the source material:
Mary remains devoted to Jekyll until the end, witnessing his final transformation and ultimate suicide as Hyde. Key Themes Mary Reilly
Unlike the original story, which focuses on scientific hubris, Mary Reilly explores the deepening emotional bond between Mary and Jekyll. Jekyll begins to treat Mary as a confidante, even as he spirals into his dangerous experiments. The story is highly regarded for adding layers