Usage patterns
〈事〉の真実を知るto learn/discover the truth (of something)
He learned the truth about the incident.
真実が明らかになるfor the truth to come to light
As a result of the investigation, the truth came to light.
真実を隠すto hide the truth
She hid the truth for a long time.
真実を追求するto pursue/seek out the truth
The reporter kept pursuing the truth.