The Doctor and Sarah are drawn into the Mandragora Helix, an entity which exists among the stars and which transports the TARDIS to 15th century Italy.
Did You Know?
was inspired by The Masque of the Red Death
(1964) to have a story set in Renaissance Italy. However, he wanted to avoid the pattern of many Sixties historicals by shifting the focus away from the Doctor's encounters with famous individuals like Marco Polo and Emperor Nero. See more
The corpse of Giuliano's father can be seen breathing. See more
Referenced in The Secret of the Labyrinth