Learn what "i know who killed my father okay" means, when people say it, and how to use it naturally in English.

This means the speaker is revealing or insisting that they know who is responsible for their father's death.
From The Missing Piece, Episode 62
Someone insists they know who committed a murder and wants the other person to listen.
Use it in serious crime or emotional confrontation scenes. It sounds intense and is not casual conversation.
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