I slid my hand into his and squeezed gently. "What you went through is why my friends and I fight," I said. "Nobody else knows. It's a secret. My parents don't know. Jake's brother, Tom, is a Controller. That's . . . what it's called, when a Yeerk has taken over. You become a Controller." I didn't know if this was going to help him or hurt him, but maybe if he knew more about what had happened, he'd be able to move past it. I had no idea. I'd never had to help someone like this. Sure, Jake had been infested, briefly, but he'd already known about the Yeerks and everything. It'd been why it was so important for him not to make it back to the Yeerk Pool.