412 Bullets for a scale

When Emma is kidnapped by a crew of strange and unforgiving pirates, the world suddenly seems like a much darker place. She is quickly swept up into the midst of a scary and horrible plan, where lives are given less and less value as the days go by and she is persuaded to interrogate, punish and lie.
Who is the mysterious boy who seems to have what everyone wants?
And, more importantly, how many bullets will meet their mark before he tells...?