Hostage

Hostage consistently deal with literal captivity and then explore what captivity does to fear, courage, dignity, relationships, faith, and the meaning of freedom. The book repeatedly removes things people normally don't think about and it'll guide you to have a new appreciation for ordinary freedom. 

Strength doesn't mean invulnerability. The strongest person in the room can still become terrified their life is genuinely threatened. And that's okay. You will notice that life become precious when its fragility becomes visible. You will also learn that being powerless doesn't make someone worthless.