向こうも向こうで What does this mean in this context ? (mukou mo mukou de) Is this some kind of Japanese Idiom?


Context: MC talking with 2 girls in his team. The detective (who was helping
MC to clear his name from the false accusation of police and find out who is
the real murderer) has left the crime investigation after received a warning
letter from the culprit.

> G1: まったく勝手な奴だわ。
>
> G2:察するに……犯人に脅迫をされているようだな。
>
> MC: 脅迫…
>
> G2: 向こうも向こうで (I don't understand this line) こちらの動きをある程度掴んでいるということだ。油断は出来ないな。

Can someone give me the English translation of the last sentence?

My guess: "G2: The opponent (the culprit) can also do whatever he wants to us.
It means that our opponent has already got some idea of our movements. I guess
we can't let our guard down now."




This is a variant of the `AはAで` construction that has been asked several times
on this site:

  * [Meaning of あいつはあいつで](https://japanese.stackexchange.com/q/78118/5010)
  * [What is the meaning of あいつはあいつで?](https://japanese.stackexchange.com/q/21167/5010)
  * [What is meant by それはそれで面白い in this sentence](https://japanese.stackexchange.com/q/68881/5010)

This も means "also", but since `AはAで` already means A is similar to what's
already mentioned, `AもAで` is usually interchangeable with `AはAで`. 向こうも向こうで and
向こうは向こうで are almost the same.

> 向こうも向こうでこちらの動きをある程度掴んでいるということだ。  
>  That is, (just as we know what they are doing,) they have some idea of what
> we are doing, too.




This is a variant of the `AはAで` construction that has been asked several times
on this site:

  * [Meaning of あいつはあいつで](https://japanese.stackexchange.com/q/78118/5010)
  * [What is the meaning of あいつはあいつで?](https://japanese.stackexchange.com/q/21167/5010)
  * [What is meant by それはそれで面白い in this sentence](https://japanese.stackexchange.com/q/68881/5010)

This も means "also", but since `AはAで` already means A is similar to what's
already mentioned, `AもAで` is usually interchangeable with `AはAで`. 向こうも向こうで and
向こうは向こうで are almost the same.

> 向こうも向こうでこちらの動きをある程度掴んでいるということだ。  
>  That is, (just as we know what they are doing,) they have some idea of what
> we are doing, too.

