Batman & Teen Titans: Surprise Attack

Missing

She was confused.
Surely he wouldn't run away, would he? Maybe he went back to the mountains?
Where was Damian?
     Raven looked everywhere, and even considered telling the others about him so that they'd help.
     But she didn't. She just searched on her on.
     She also didn't dare call Batman. He'd kill Damian if he found out he'd come back.
She had to find him.

Where am I?
Damian woke in a dark room, no idea where he was. He was chained to a chair, and he was in pain.
     He had been beaten, which confused him. When did that happen?
     "Hello, Damian," said a familiar, dark voice. "I see you've finally woken up."
     Although it was familiar, Damian wasn't completely sure who it was.
     "Who are you?!" he yelled.
     He heard a laugh.
     "Oh, I believe you know. You left me to die in that oil rig two years ago, and dint even realize that I was supposed to be dead when I showed up!"
     That made him realize who it was instantly.
     "Why are you doing this, Slade?"
     Another deep laugh.
     "Revenge," Deathstroke told him. "Why else? You stabbed my eye,  nearly killed me and left me to die!
     "Now, I think you deserve the same."
     He finally stepped out of the shadows, revealing his newer, armored suit. He was holding a remote.
     "You see," he continued, "I've got your little girlfriend right where she needs to be."
     He pushed the power button, and Damian saw a screen flash on in the dark.
     It was security footage from the Tower...
     "We don't have—" Damian started.
     "Cameras?" Slade interrupted. "I've been spying on you for months. We set them up. Now, I think it best for you to watch this next part."
     Damian obediently turned his head to face the TV instead of Slade, and he instantly regretted it.
     He saw Raven. She was walking around the Tower's island.
She's looking for me, Damian told himself, fighting back a tear.
     He didn't understand what he was being shown, until it happened.
     Someone jumped on Raven, putting a bag over her head immediately after knocking her out with a blow to the head.
     "Raven!!" Damian yelled as he lunged at Slade.
     At least, tried to. Those chains were holding him back, and he couldn't get up.
     He sat back in pain. The pain of moving.
     "Why are you doing this," Damian asked, trying to stay calm.
     Slade chuckled. "To break you," he said. "All for my revenge. And now," he continued, drawing a knife from his belt.
     "I will kill you."
     He slammed the knife down to get Damian's hand. But luckily, the boy was able to move his hand so that Slade hit not Damian, but the chain for his right hand.
     He quickly used that hand to smack the knife from Slade's hand and grab it, cutting through the chains in a few minutes, still fighting Slade while doing it.
The chains took some effort, but knowing Raven was captured kept him going, stronger than ever.
He had to get out. He had to find her.
Finally, after what must have been hours, he was free, and had managed to knock out Deathstroke.
He stood up, looking around. It was too dark to see anything, and he had nothing to help him.
He reached down and grabbed Slade's sword so he'd have a weapon, and started feeling for walls.
He finally found a door, and opened it to a light-filled corridor. He rushed down it, carefully looking out for assassins.
He found many doors down the hall, but all opened to be more dark rooms.
He also checked them for Raven. Nothing.
Then he remembered what he and his father did when they were saving Dr. Langstrom's family: they found a false wall.
Remembering this really helped him. He began to feel across the walls and listen for noises.
Eventually, he found one. When he opened it, he was terrified by what he saw.
Raven was scraped and bruised, covered in scratches and blood. She was chained to a chair like he was, and was so beaten that she could do nothing about it.
     She couldn't teleport out, she couldn't get rid of the chains.
     She couldn't move. Barely moving an inch caused unbearable pain.
     "Raven!" Damian yelled.
     She jerked her head up to see him, but almost screamed. Damian could see the tears in her eyes.
     He ran to her and busted the chains, wrapping her into a hug.
     "Are you alright?" he asked her, trying to help her stand. "What happened?"
     "I-I-I-I—"
     She slipped a bit, but was caught by Damian.
     "Careful," he told her. "You've been through a lot."
     She looked at him and managed a weak smile.
     It soon faded when something cut through her.
     They both looked down to her stomach, only to see a knife covered in blood.
     "No..." Damian was in disbelief. "No..."
     Raven looked up at Damian, smiling weakly again.
     "Damian—"
     She fell to the ground.
     And Damian saw Deathstroke holding a bloody knife.
     And he let out the loudest scream possible.