get wise to

1. 知道
   If he gets wise to what you are up to, he is sure to be angry.

   假使他知道了你想幹什麼一定會生氣的。

none the wiser

1. 還是不明白
   He seems to be none the wiser.

   他看來還是不明白。

• be wise after the event
  understand and assess something only after its implications have become obvious.

• in no wise
  not at all.