These authors' works have the appeal factors plot-driven, and they have the genre "historical mysteries"; and the subjects "child detectives," "girls," and "boarding school students."...

These authors' works have the appeal factors plot-driven, and they have the genre "historical mysteries"; and the subject "girls."

These authors' works have the appeal factors suspenseful, and they have the subjects "boarding school students," "boarding schools," and "missing persons."

These authors' works have the appeal factors suspenseful and intricately plotted, and they have the genre "historical mysteries"; and the subjects "child detectives" and "murder investigation."...

These authors' works have the appeal factors intricately plotted, and they have the subjects "child detectives," "girls," and "kidnapping."

These authors' works have the subjects "girls," "boarding school students," and "boarding schools."

These authors' works have the appeal factors suspenseful, and they have the genre "historical mysteries"; and the subjects "child detectives," "murder investigation," and "friendship."...

These authors' works have the appeal factors plot-driven, and they have the genre "historical mysteries."

These authors' works have the appeal factors suspenseful and intricately plotted, and they have the subjects "child detectives," "murder," and "murder investigation."

These authors' works have the appeal factors suspenseful and plot-driven, and they have the genre "historical mysteries."

These authors' works have the appeal factors suspenseful and plot-driven, and they have the genre "historical mysteries"; and the subject "friendship."

These authors' works have the subjects "child detectives," "girls," and "friendship."