YOU SAID:

They can't arrest you if you're already in jail.

INTO JAPANESE

彼らは刑務所にいる場合は逮捕することはできません。

BACK INTO ENGLISH

They can not be arrested if they are in prison.

INTO JAPANESE

彼らは刑務所にいると逮捕することはできません。

BACK INTO ENGLISH

They can not be arrested if they are in prison.