Liz continues to work with the Doctor and UNIT through encounters with the Silurians, the so-called Ambassadors of Death and the Inferno project, where the Doctor also encountered Section Leader Elizabeth Shaw, an alternative version of the scientist in a parallel universe. She eventually resigns from UNIT and returns to Cambridge; there was no "farewell scene" on screen for Liz, with her departure simply being announced by the Brigadier at the beginning of Terror of the Autons. She reportedly told the Brigadier that all the Doctor really needed was someone to pass him his test tubes and tell him how brilliant he was.