 After being visited by her partner , Agent Charlie Francis ( Kirk Acevedo ) and given a gun , Olivia is unsuccessfully questioned by the shapeshifter , who has adopted the appearance of a female nurse . The nurse attempts to kill Olivia , but is shot and flees from Jessup . Peter , Charlie , and Jessup follow her into nearby tunnels , but become separated . Peter and Jessup hear gunshots and arrive to see that Charlie has apparently killed the shapeshifter . Peter returns to Olivia , and tells her the Greek phrase means " be a better person than your father , " and was told to him every night by his mother . 
