sometimes quiet is violent
Can a man still be brave if he’s afraid? That is the only time a man can be brave. - GRRM
In other words, Credence set himself out on an impossible search and rescue mission for the real Percival Graves and, to his astonishment, succeeds.
Read Part 1 of 2 on AO3: http://archiveofourown.org/works/10723539/chapters/23761023