Columbia subject headings:
Harvard subject headings:
Kidnapping victims--Fiction
Kidnapping--Germany--Fiction.
Kidnapping--Investigation--Fiction.
Police--Germany--Fiction.
Princeton subject headings:
Detective and mystery fiction.
Fiction.
Kidnapping victims--Fiction.
Kidnapping--Germany--Fiction.
Kidnapping--Investigation--Fiction.
Novels.
Police--Germany--Fiction.
Thrillers (Fiction)