在U-bookstore的舊書區被封面吸引，大大的氣球，還有—祕密。還有，這是本年度的書。所以幾經篩選後，這是三本中的一本。但是又到Secret Garden時，看到這本書被高高地立放，顯然被列為主打書，色彩溫和卻非常顯目，也是小小故事，一群小老鼠正要整裝出發去他們的祕密地方，Only the mice know...
how to find it.
when to go there
what to wear
how to get there
how it's hidden
what to do there
what to eat there
how to watch
what they'll see there
whom to invite
when it's over
how to keep the circus —(turn the page) secret.
很安靜很溫雅的小書。
