Hanssen suddenly decides to be a hands-on surgeon on Keller, and Arthur is desperate to prove his worth. But when he has difficulty separating the personal from the professional, Arthur makes a heartwrenching decision. With the ice thawing between them, Oliver grabs his chance to get back with Zosia. However, disaster strikes when Oliver crosses a line. A secretive Raf makes a personal sacrifice when a newly empowered Fletch finally makes a date with Naomi.