Revenge is sweet

After he unlocks your handcuffs, you kick him and try to run. Unfortuantly, he catches you and holds you.
"I know you're afraid. Every recruit is. But you must come with me if you don't wanna die," Mark says.
You start to cry.
"My grandparents are dead. No one can replace them and why me? Why?" you ask.
"I saw the way you fought the officer. You have potential. That's why I chose you."
What do you say in return?