I died here.

The realisation, mixed with the patch of long-dried blood on the floor, worked like some kind of cue. Suddenly the veil concealing my memories from me disappeared and my memories spilled into my head, so hard and fast that it left me gasping for air.

Slowly, I started sifting through them, but my efforts were futile – it was like trying to hold water in your hands. My memories kept slipping through whenever I tried to get a grasp on them, but every now and then one would jump out at me – Tobias and I scaling the Ferris wheel, Will, Christina, AL and I during Dauntless initiation, Tobias' eyes in the sunlight, the faint sound of a baby crying. I saw Marlene plummeting to her death, I felt the stab of Caleb's betrayal at Erudite, I saw, Will's lifeless body falling to the ground, I felt death serum making my body heavy and hard to move and I saw my mother standing in front of me in this very room, her eyes soft and earnest. I remembered the feeling of paralysis serum running through my veins, the increasingly terrifying sensation of my memories being ripped out from my head. I remembered the sounds of familiar voices, and seeing a shock of black hair, and opening my mouth to form the words to cry out for Tobias before darkness consumed everything I was.

When I resurfaced from the sea of memories and I was breathing at a normal rate, I jumped to my feet and bolted out of the lab, sprinting back the way I'd come until I collided with a body. The wind was knocked out of me as I felt to the floor, as I looked up to see Christina sitting on the floor in front of me, her expression part annoyed and part curious.

"Tris?" Christina asked, eyeing me. "What's wrong?"

She helped me to my feet and that was when she got a good look at me. I wondered what she saw, until her eyes flew wide and she whistled softly. "You remember."

I nodded, and she asked, "All of it? You remember everything?"

I nodded again. "And we need to get back."

"We just got here!" Christina protested.

"Chris, I remember everything."

Christina stared. "You know who organised it all?"

I nodded. "I think so."

Christina opened her mouth too say something, but then she thought better of it, and we both sprinted through the long-abandoned halls of the Bureau, climbing back into the truck without a word. Whether I got to drive or not was the last thing on my mind.

Caleb was standing beside the building, his hands deep in his pockets as he leaned against the wall, when we pulled up to what used to be an Erudite building and now functioned as a medical research facility, as Christina pulled the truck into a park out the front of it. He straightened up as Christina and I got out, and I felt nerves prickling in my stomach, remembering what I did about my brother. I had long forgiven him his betrayal at Erudite, but I still felt it, prickling at the back of my mind.

"Is he still there?" Christina asked, pulling me out of my reverie. I'd told her the extent of the relevant memories that I'd uncovered on the way here, and as a result, she was almost as desperate as I was for the answers that were dangling just out of my reach.

Caleb looked across at Christina and nodded before turning his attention back to me. "So . . . you remember everything?"

I looked away. "Yeah. Everything."

"Tris – "

I looked back at him. "It's not important right now. We'll talk about it later, alright?"

Caleb nodded and I hugged him quickly before he led us inside. Walking behind Caleb, we walked past labs much newer and more pristine than the ones we'd seen at the Bureau. These ones were all chrome and white and light and gleam, while dust had turned the labs at the Bureau a dull grey colour, adding to the aura of impending doom that had surrounded the whole place, despite my brief bout of happiness at the dorms. Thinking about the Bureau's labs sent the sight of that patch of blood flashing across my vision, but I blinked it away, along with the few tears that had accompanied it. Christina threw me a curious look, but Caleb remained oblivious to my inner turmoil.

Abruptly Caleb stopped and turned to face us, so quickly that Christina and I nearly ran into him.

"Oh, what?" Christina snapped, annoyed.

"I forgot to ask. Was Tobias coming as well?" Caleb asked me, ignoring Christina's glaring eyes.

"No," I told him, shaking my head. "This is my fight, not his."

Caleb looked surprised. "Is that right?"

Sighing, I folded my arms over my chest. "Yes, that's right. My memories, my daughter, my boyfriend, my life. My fight."

"Clara's his daughter too, Tris. Did it ever occur to you that it might be his fight too?" Caleb asked.

"You forgot - My memories," I repeated irritably.

Caleb grinned. "That's the sister I know and love to hate."

Beside me, Christina groaned. "Caleb, for the love of God, are you going to take us to him or not? Because if you're not, I'm going to stab your eyes out with my thumbs and find someone who will."

Caleb looked vaguely amused at that, as if he'd heard that threat a thousand times before and it had long since lost its effectiveness, but he turned and led us off. Grinning, I high fived Christina behind Caleb's back, and I saw my brother shake his head at us. Christina grinned back at me, but both our smiles disappeared as Caleb found the lab he'd been looking for, knocking on the door before he walked inside. Christina and I followed, and impatience and anger and a thousand other ugly emotions started to mix together and bubble up inside me as I saw the back of a black head of hair sitting at a computer.

"Hey," Caleb said, leaning against the doorway as Christina and I passed him. "You've got visitors."

"'Kay," came the vaguely familiar voice, almost the same as the one in my memories, although this one was weathered by age. "Thanks, Caleb."

Caleb nodded and murmured, "Good luck," in my ear before he left, and my breath caught as the man in the chair turned to face us.