In Plain Sight Season 5 Episode 6 : The Medal of Mary
Mary is still reeling from the flood of emotions stirred-up after having to arrest her father, James, when he unexpectedly showed up on her doorstep after being AWOL for 30 years. Bad goes to worse when Special Agent Robert O'Connor, Mary's "favorite" FBI agent, demands her assistance to get James to provide critical information regarding his old partner-in-crime, Cormack “Sully” Sullivan, one of the FBI's 10 Most Wanted. As he tells his story, James forces Mary to take a stroll down Memory Lane and reveals that Jinx and Brandi are in danger from Sully. Meanwhile, Marshall's dad, Seth, has come to visit in order to meet Abby and makes an unexpected observation.