When Nick Cheyney, the director of a new adaptation of 'The Scarlet Pimpernel' is beheaded by a guillotine on set, there is no shortage of suspects. Can Barnaby and Jones find the killer before the case becomes as bloody as the French Revolution?

Adam Farr, Ava May, Charlotte M. Moore, Desmond Barrit, Emily Hamilton, Fiona Mollison, Gemma Page, Gracie May, Jay Villiers, Jonathan Moore, Kieran Bew, Kirsty Dillon, Marian McLoughlin, Mark Webb, Matthew Marsh, Nick Thomas-Webster, Nicky Henson, Paul Grunert, Rebecca Jameson, Richard Hope