A London curator loses the Mona Lisa to a collector, who discovers it's a fake.
C. Aubrey Smith
as James Collison
Erich von Stroheim
as Carl Hoffmeyer
Stephanie Bachelor
as Toni Collison
Forrester Harvey
as Sam Todworthy
Doris Lloyd
as Emma Todworthy
Richard Fraser
as Robert Cartwright
Eva Moore
as Mary Collison
Victor Varconi
as Jules
Emil Rameau
as Professor Renault
Frederick Worlock
as John Brent
Olaf Hytten
as Purvis
Tarquin Olivier
as Young Cartwright
