Leonardo uses his intellect to save Florence as Pope Sixtus brings powers together; Nico tries to resist Riario's temptations.
Cast:
Tom Riley
Laura Haddock
Elliot Cowan
Lara Pulver
Blake Ritson
Gregg Chillin
Hera Hilmar
Eros Vlahos
James Faulkner
Carolina Guerra
Kieran Bew