And nothing but the truth when did the truth come out with text evidence

The truth came out with text evidence when the protagonist of the story found a letter that revealed a long-held secret. The letter stated, "I can no longer keep this secret from you. The truth is, I am not who you think I am. I have been living a lie for years, and now it is time for the truth to come out." This revelation ultimately led to the unraveling of the mystery and exposed the hidden truth to all involved.