Suspense novelist Shen Ye discovered that the death methods of the deceased in his novels were being fulfilled in reality.
Gu Shen, the detective in charge of the case, became the only person who believed in her innocence.
As the two teamed up to chase the murderer, Shen Ye unexpectedly discovered that Gu Shen was the "return" pen pal she had anonymously communicated with ten years ago but had never met.
He remembered every scar she had confided in back then.
And the next chapter she wants to write now is the ending of the murderer.
"Aren't you afraid that what I write will kill more people?"
"Don't be afraid. Because I will catch him before you write it out."
This is a story about "someone reading my letter in the dark" - all your vulnerabilities and secrets will eventually be gently caught by someone.