Celia and Stephen Bronson anticipate a lively and interesting vacation when they are invited by their grandmother to visit with her in Kyoto, where she is writing a book on Japan. The Shinto shrines, the formal gardens, the Buddhist ornaments which adorn the refreshing simplicity of their new home, more than fulfill their anticipation. But it is the uneasy ghost of a Gamurai warrior, the desolate grief of an ancient Tokugawa patriarch, and the bitter conflict of a little Nissi girl, who wants desperately to lose her Japanese identity that really awaken the two American teen-agers to the root quality of traditional Japan. In solving the secret of the Samurai sword, Celia not only puts to rest the tormented spirit of the warrior, but finds a more valid basis for her own intellectual and artistic expression. If the teen-age reader, ignorant of the structure of classical Japan, can absorb even half of the details of Japanese life offered here, this pleasant mystery will have been well worth the reading.