That means war between Detective Bureau and the killers of that dead detective
We need to revenge him, the dead detective was a part of us.
That means a war between Detective Bureau and the killers of that dead detective.
We need to take revenge to the dead detective. It was one of ours.
That means a war between the Detective Bureau and the killer(s) of that detective.
we found the dead detective and we know where the killer is, so we track him and breach him