Honoria Glossop Turns Up (or, Bridegroom Wanted!) - S4-E3
Factual error: Sir Roderick has moved his psychiatric clinic to New York because the BMA wouldn't approve of his methods. Although we don't get exact dates for the episodes, since prohibition was in effect in the last episode and Puttin' On The Ritz came out in December of 1929, we can presume it's about 1930. The AMA wouldn't recognize psychiatry as legitimate medicine until 1945. Sir Roderick wouldn't have had any better luck in America.
