Assassin's Creed: Revelations2011

Clay Kaczmarek - Subject Sixteen:
Here's the problem. You're brain is hash. Too many ghosts in your head, too many voices. So, how do you fix that? You claw your way back into the stored data, you find unfinished memories and you crack them open. Finish what you started, until your ancestor has nothing left to show you. That is a synch nexus. And when you find it, the Animus can separate Desmond from Ezio and Alta?r and send you home. Back to your body.

Desmond Miles:
How do you know all this?

Clay Kaczmarek - Subject Sixteen:
Because it happened to me. But my body-it's worm food now. So I'm stuck here.