Reference:Catherine, Prison Island interactions

If you do not have the Trap Book

Ya faya deek... You made it. But how'd you get past Gehn? He must really believe I've gone mad. I know what he's doing. He's watching you. He's waiting for you to make a mistake. He's hoping you'll lead him back to D'ni. You can't let Gehn… Atrus sent you to save me, but if Gehn gets back to D'ni, he'll kill him.

[Catherine moves in closer, out of the view of Gehn's camera, and whispers]

Find the Moiety. They have the book. Be careful.

[Catherine backs away again, and speaks loudly]

Go then. If you won't help me, then I have nothing more to say.

If you have the Trap Book, but have not yet captured Gehn

Ya faya deek...You made it. But how'd you get past Gehn? He must really believe I've gone mad.

I know what he's doing. He's watching you. He's waiting for you to make a mistake. He's hoping you'll lead him back to D'ni! You can't let Gehn… Atrus sent you to save me, but if Gehn gets back to D'ni, he'll kill him.

[Catherine moves in closer, out of the view of Gehn's camera, and whispers]

I think I know how to signal Atrus, but it's going to take both of us. You'll have to trap Gehn before you can get the combination. Be careful.

[Catherine backs away again, and speaks loudly]

Go then. If you won't help me, then I have nothing more to say.

If you have captured Gehn but don't have the combination for the elevator

You made it. But how'd you get past… you have to get me out of here. If Gehn gets the linking book to D'ni, he'll kill Atrus.

[Catherine moves in closer, out of the view of Gehn's camera, and whispers]

Gehn's people may be watching us. The combination to the elevator is somewhere in Gehn's office. Be careful.

[Catherine backs away again, and speaks loudly]

Go then. If you won't help me, then I have nothing more to say.

If you have unlocked the elevator

[Catherine climbs onto the elevator platform with you]

We have to move quickly. Gehn's people may already know what's happened. Once we're back with the Moiety, we'll have time to regroup. Can I see the book?

You did it. We're all free. You captured Gehn!

But there's still his followers. I'm not sure what they'll do once they realize he's gone. We'll have to get the villagers to safety as soon as possible. You go back to the Temple Island and reopen the fissure. I know it's risky, but it's the only way to signal Atrus. I'll try to make it back there as soon as I can, but don't wait for me. Don't forget. The portal combination's in my journal. Good luck.

[Catherine rips the wires out of the Prison door and runs off to the Firemarble Dome]