The Doctor saves Giuliano from Federico's men, then they try to find Sarah, unaware Hieronymous has hypnotised her to kill the Doctor.
Did You Know?
The scripts went through many re-writes. Late additions to this episode included the subplot in which Sarah is hypnotically ordered to kill the Doctor and the Doctor's explaination that Sarah Jane's ability to understand foreign and alien languages is a Time Lord gift he allows her to share. See more