: As April sends out invitations, an awkward dynamic develops between Jackson and Stephanie. Jackson eventually tells Stephanie they don't have to attend the wedding, though he claims it’s not because of lingering feelings for April.
: The medical team struggles to replace a child’s contaminated medical conduit, racing against time while waiting for the 3D printer.
: Ben notices Bailey’s repetitive behaviors (OCD) and confides in Derek. However, as a hospital owner, Derek is forced to report this to Owen, leading to Bailey being pulled from surgeries for a psychiatric evaluation.
: Following Shane’s defense of her work, Cristina surprises viewers—and Shane—by kissing him.
: A terminal pancreatic cancer patient who begins "auditioning" women to take her place in her husband's life after she passes.
: Named after the hit song "Somebody That I Used to Know" by Gotye.
: The two "twisted sisters" continue their feud over the 3D organ printer. When Meredith interrupts Cristina’s research, Shane Ross steps in to defend Cristina and kicks Meredith out of the room.