A proverb meaning that there are hidden circumstances behind things; there's more than meets the eye.
彼の親切には裏には裏があると思ったほうがいい。
You'd better assume there's more to his kindness than meets the eye.
新聞の見出しだけで判断すると危ない。裏には裏があるかもしれない。
It's risky to judge by the newspaper headline alone. There may be more behind it.
政治の世界ではよく『裏には裏がある』と言われる。
In politics people often say there's more than meets the eye.