Here we go...! The first of many exciting cast announcements! Mercy is one of the most complex characters I’ve had the honor of writing for and she is one of the main reasons I knew I had to make this series after reading “The Expatriates” by @janiceyklee . We could not be more lucky to have the multi-talented, wiser than her years Ji-Young Yoo to bring Mercy to the screen. #xpatshk