Dictionary / Vocabulary / 偽装工作
ぎそうこうさく
diversionary tactics (maneuvering); disguise; hide by camouflage
アリバイの偽装工作したところで、絶対どこかでボロが出るってわからないのかな。
Don't you know that even if you come up with an alibi, it's certain that the truth will be revealed at some point?