Inside the Maelstrom, Part Two by Grace McGinty

Things had gone badly in Yokohama, but Aviva wasn’t about to quit. She needed to see where this crazy journey ended, needed to find Nemo and see if it was possible to fight back her demons and win. Following the newest clue to Hong Kong, Evan now guarding her body very closely, Aviva tries to move on.
But it’s impossible.
Those assholes had wormed their way beneath her skin like a tattoo inked with poison, and she was never going to be the same again.
For the guys, flying home with a broken heart becomes the least of their problems as Hendrick’s dad finally makes his move, leaving Hendrick and Sampson locked up behind bars and Otto scrambling to get them out.
But no matter how hard it got, they wouldn’t–couldn’t–drag Aviva into it. Because Hendrick’s father was a sociopath who would stop at nothing to cheat his way to the very top, even if he had to grind Hendrick beneath his boot to get there.