Starz's 'Da Vinci's Demons' returns from its Memorial Day marathon tonight with the all-new episode, "The Hierophant." In this penultimate installment, Da Vinci takes unconventional measures to infiltrate the Vatican while Giuliano Medici comes one step closer to uncovering Rome's spy. And we've got an exclusive clip of the sexy morning after between Guiliano and "Lady" Vanessa from tonight's episode!

Only two episodes remain in the inventively riveting first season of Starz's 'Da Vinci's Demons,' beginning with tonight's "The Hierophant." Leonardo Da Vinci (Tom Riley) is poised to discover one of Rome's greatest secrets, while Giuliano (Tom Bateman) has his own secret to unravel, and we have an exclusive clip from tonight's episode featuring the dashing bon vivant and his latest conquest, Vanessa (Hera Hilmar!).

From Starz's official description of "The Hierophant":

On the final day of Carnival in Rome, Leonardo builds an underwater suit and breaks into the Vatican through the sewers in search of the second key to the Vault of Heaven – bringing him face to face with both the Pope and the mysterious Prisoner.  Giuliano uncovers and reveals the true identity of Rome’s spy.  Pope Sixtus tempts Leonardo with access to the Secret Archives but it is Nico who retrieves the second key from Riario and brings them one step closer to the Book of Leaves.

Check out our exclusive 'Da Vinci's Demons' clip from "The Hierophant" above, and give us your predictions for the final two episodes of the season in the comments!