明明什么错都没有，偏要因为旁人的过错受这种无妄之灾。

Clearly what erroneous all have no, bent on having because of side the person's fault namely subjected to this accidental misfortune.

《无妄之灾》：一位儿子在死后被证明并没有杀死他的妈妈，这表示家里的另一个人才是真凶。

Ordeal By Innocence, in which a son is posthumously pardoned of murdering his mother - meaning another member of the family must be guilty.