Episode 5 - S4.E5

Dan is devastated to discover he has a life-threatening and that the only operation that can cure him may also end his career. He tries to confide his problems to Cathy, but she tells him there is just too much water under the bridge now for them to be friends. Meanwhile, Keelin, with the help of her father, decides to follow Ronan to New York to give their relationship a second chance.