When her daughter, Katie, gets sick with a liver disease, O' Malley learns that her husband, Hugh, is not Katie's biological father. She searches for Dan, Katie's real father, and learns that her went into hiding after seeing something that he shouldn't have. Dan is Ragen's only hope for a liver doner if Katie needs it. Ragen's revelation puts her marriage, and possibly her life, in danger as she looks for Dan.
—Dylan Smith