裏うらには裏うらがある

expression, godan verb (-ru, irregular)

there are wheels within wheels; there's more than meets the eye

Proverb meaning that behind one hidden aspect there is yet another, deeper layer; things are not as simple as they appear.

• 彼かれの話はなしは裏うらには裏うらがあるようで、何なにを信しんじていいかわからない。

  His story seems to have hidden depths; I don't know what to believe.

• この事じ件けんは裏うらには裏うらがあるから、簡かん単たんに判はん断だんできない。

  This case has many hidden layers, so we can't judge it easily.