I can poison you

Without you knowing

Until it’s too late.

I’ll question you

Until you either give in

Or fight back

Because I can kill you if I have enough time

And if you don’t face me.

It is possible to banish me

But I may return in disguise for years

Before you realize,

That it was I,

Who killed you.

(There are no hints or answers available for the A.R.C.   If you come to an answer, contact me or share in the comments below, and I’ll let you know if you guessed correctly.)