Why am I lying?

Because Stormwatcher was nice.

But ... really. No one ever lies to Acorn. And if he finds out ... he kills you.

Because you're not under his control.

No. I feel like there's something else I want to know.

Why your father is the way he is.

I don't care about him one bit. I just want to know why and how the Clans fell.

And that's why you are lying for Stormwatcher. To ask him what happened.