Recurring: Christopher R. Sabat (Father Tres Iques), Greg Ayres (Pope Alessandro), Gwendolyn Lau (Sister Kate Scott), John Gremillion (Cardinal Francesco De Medici), Lydia Mackay (Caterina Sforza)
Episodic: Amber Cotton (Jessica Langston), Bill Jenkins (Senior Deacon), Dennis Maher (Secretariat Priest), Eric Vale (Alfred)
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