Bandit Queen

S1, E11: Lorenzo has fallen in love with Maria and, because she's a commoner, he uses Mac's den to date her in secret. With Mac, Leo has broken into the Medici Palace to get his notebook back. As they search, an arrow is shot through a window with a message attached, saying that Lorenzo has been kidnapped by his girlfriend - not a humble fishmonger, but Belladonna, famous as The Bandit Queen. Even worse, Lisa has secretly followed Leo to help him find the notebook and she's captured by Piero, who now knows she's a girl - and has locked her up.