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Leonardo uses fireflies to track the source of the "possession" in a method similar to modern UV lighting, discovering that a tainted altar was the common link among the victims.

We see the beginning of a mutual respect (and occasional rivalry) between Leonardo and Giuliano Medici , as they both investigate the convent's horrors.

In the third episode of , titled " The Prisoner ," Leonardo da Vinci faces a classic clash between science and superstition when a convent of nuns appears to be suffering from "demonic possession". Episode Highlights Da_Vinci_s_Demons_1x03_Il_Prigioniero_ITA_ENG_D...

For more details on the cast and plot, you can check the episode's entry on IMDb or the Da Vinci's Demons Wiki . Da Vinci's Demons s01e03: The Prisoner - Dark Matter Zine

While the church claims the nuns are possessed and attempts violent exorcisms, Leonardo applies logic and forensics to find a rational cause. He eventually identifies the culprit as an ergot infection (a fungus often found on rye) that causes hallucinations and convulsions. Leonardo uses fireflies to track the source of

In Rome, Count Riario meets with a hooded figure held in the Pope’s secret prison. This prisoner teaches Riario strategy through the ancient Chinese game of Go , hinting at deeper conspiracies surrounding the "Book of Leaves".

The episode emphasizes that "demons" are often just misunderstood natural phenomena. Episode Highlights For more details on the cast

The mystery hits home when Leonardo's close friend Vanessa falls ill, forcing him to race against time to provide an antidote. Key Themes