In Book 5 of the Therienka, Girl Detective series, a newspaper article about the death of a reclusive millionaire starts Rinka off on a new mystery. A multi-million dollar inheritance will depend on Rinka's ability to solve a baffling riddle. Rinka is only nine, but she's curious, smart and logical. In this exciting book she applies her "awesomeness" to the world of puzzles and codes.