Shibe reels from the accusation that he has "actually killed a person." Despite protesting that he never did such a thing, he loses the audience's confidence and is thrust into first place. Meanwhile, Tenji finds himself in a distressing situation after realizing Yuichi is the one who wrote the card. Yuichi then makes the shocking announcement that he knows who the traitor is.
So you can't really prove anything's 
a lie without clear evidence.
.لذا لا يمكنك أن تثبت أنّ أيّ شيء كذب دون دليل دامغ
Ohne handfeste Beweise lässt sich
eine Lüge also nicht widerlegen.
Demostrar una mentira
sin pruebas sólidas es complicado.
Demostrar una mentira
sin pruebas sólidas es complicado.
Difficile de prouver
qu’une accusation infondée est fausse.
Quindi, non si può provare che un'affermazione
sia falsa se non si hanno prove chiare.
Então é muito difícil você provar 
uma mentira sem provas claras.
Опровергнуть ничем не подкреплённую ложь
проблематично.