Danny is broken until someone he hardly knows believes in him. That someone was a murderer. He helped Danny survive the nightmare that would later give him the strength to save lives and hail him a hero.
He wasn´t brave; he took a chance and it paid off.
Now everything´s changed. Danny has an opportunity to rid himself of the hatred brought on by the accusation, but he knows he must take his secret to the grave or face lifelong shame.