裏うらがある

expression, godan verb (-ru, irregular)

have a hidden side; have an ulterior motive; be more than meets the eye

Idiomatic expression meaning that a person, statement, or situation is not as straightforward as it seems; there is a hidden intention, catch, or deeper meaning.

• 彼かれの親しん切せつには裏うらがある気きがする。

  I feel like there's an ulterior motive behind his kindness.

• この話はなし、何なにか裏うらがあるんじゃない？

  There's more to this story, isn't there?