While taking in the sights of Paris in 1979, the Doctor and Romana sense that someone is tampering with time. Who is the mysterious Count Scarlioni? Why does he seem to have counterparts scattered through time? And just how many copies of the Mona Lisa did Leonardo da Vinci paint?
Tom Baker
as The Doctor
Lalla Ward
as Romana
Julian Glover
as Count Scarlioni / Captain Tancredi / Scaroth
Catherine Schell
as Countess
Tom Chadbon
as Duggan
David Graham
as Kerensky / Hermann
Pamela Stirling
as Louvre Guide
Peter Halliday
as Soldier
John Cleese
as Art Gallery Visitor
Eleanor Bron
as Art Gallery Visitor
