S11, E6: The Doctor and Sarah return to Earth and find that dinosaurs are on the loose; they discover a group that is using a time machine to bring the dinosaurs from the past.
Starring Elisabeth Sladen, Nicholas Courtney, John Bennett
S11, E6: The Doctor and Sarah return to Earth and find that dinosaurs are on the loose; they discover a group that is using a time machine to bring the dinosaurs from the past.