Robert begins to suspect Joanna's true motives for coming back into their lives and flies her mother, Beverly, to New York, to help uncover the truth. Meanwhile, Joanna investigates Julian's girlfriend who works for a rival drug company and finds some suspicious information. Mia offers to save Haverstock by donating her bone marrow but then discovers his true motivation. Sofia pays a visit to a dark character from her past in prison. (thetvdb.com)