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Piero's threat of revenge is still hanging over Leonardo. Leo thinks he is ready for whatever Piero can throw at him - but something he never could have expected is about to turn his world upside down.

With time running out, Leo embarks on a dangerous plan to spring his maestro from jail. If things go wrong, it won't just be Verrocchio's head on the chopping block...

There is an evening of surprises and danger in store when the Medici throw a lavish Masked Ball in Lorenzo's honour.

Lorenzo decides to live life on the wild side when he meets the fun-loving, carefree Bruno. Mac is convinced Bruno is bad news, but will Lorenzo listen - or will his new attitude spell trouble for him and his friends?

When a travelling theatre group comes to Florence, the whole city is excited, especially Leo and Tom, who get starring roles in the play. But when the performance gets underway, could something sinister be going on behind the scenes?

A young man asks Leo to help him solve the clues of an ancient treasure map, in order to find his missing brother.

When Leo is given the task of making a Death Mask of the old Duke, he soon realises the story of his death doesn't add up and begins a dangerous investigation...

Piero prepares for his coronation and Mac lands himself in hot water when he gets Lorenzo's fiancée mixed up with a vengeful smuggler.

Leo's idea for a superweapon could prove fatal when his explosive tests enrage the new Duke of Florence.

Tom's hot temper lands her in a duel with the world's number one fencing champion, while Leonardo begins work on building his superweapon.

As the countdown to Lorenzo's wedding gets closer, the gang launch a risky scheme to try get him out of his big day.

With the city on the brink of war and Piero's plans near completion, Leo risks everything to help a young girl and her grandma when they are accused of being Milanese spies.

Florence is at war and Piero has control of the superweapon. With all the odds against them, can Leo and his friends stop Piero before it's too late?