Bechhi is accused of being a spy for Rome. The armies of Rome and Florence face off, and Leonardo reveals his latest weapon.

Andrew Brooke, David Blackwell, Gareth Milton, Iain Mitchell, Ian Pirie, Jack Baggs, Jack Farthing, James Peake, Joe Claflin, John Cording, Nicholas Rowe, Paul Westwood, Ross O'Hennessey, Simon Armstrong, Simon Gregor, Ted Allpress, Tim Faraday, Wyn Bowen Jones