Arliss was approaching 70 when he completed the British-made "Doctor Syn" in 1937. He and Flo returned to America later that year to visit old friends, including famed astronomer Edwin Hubble in California. Producer-director Cecil B. DeMille arranged for the Arlisses to re-enact their roles in "Disraeli" on Lux Radio Theatre, DeMille's popular radio show, in January 1938. The occasion was heralded as "a new page in radio history". George and Flo subsequently appeared on Lux in radio adaptations of "The Man Who Played God" in March 1938 and in "Cardinal Richelieu" in January 1939, which was apparently their final dramatic appearance anywhere. Returning to their home in London in April 1939, the onset of the Second World War prevented their return to America during Arliss's remaining years. The only taint of scandal involved charges by the British Government in September 1941 that Arliss had not complied with a recent requirement to report bank accounts he maintained in the U.S. and Canada (similar charges were also brought against actor-playwright Noël Coward around the same time). Both men claimed ignorance of the new law, but they were fined and publicly humiliated by the experience.