Originally,
the show starred Basil Rathbone as Sherlock Holmes and Nigel Bruce as Dr.
Watson. Together, they starred in 220 episodes which aired weekly on Mondays
from 8:30 to 9:00 p.m. The show first aired on the Blue Network but later moved
to the Mutual Broadcasting System. Basil Rathbone's last episode as the famous
detective was 'The Singular Affair of the Baconian Cipher.' He was eager to
separate himself from the cast type of Holmes, and even though the show's
sponsor Petri Wine offered him generous pay to continue, he decided to move on.
Once he did, the sponsor did as well, and Tom Conway took the starring role,
though Nigel Bruce got top billing and was always announced first. The new
sponsor was Kreml Hair Tonic for Men, and the new series only lasted 39
episodes. Today, only a handful of episodes are in existence.