Minnie Rayner

When a foreign diplomat is blackmailed into joining a criminal conspiracy, Holmes suspects that shadowy mastermind Dr. Moriarty is behind the scheme.

1934. A love letter to the River Thames. An elderly couple swap lock-keeper duties for a riverside pub, helped by friends; and romance blossoms for a pair of youngsters.

1933. After losing her factory job, Grace Milroy is unexpectedly taken on as housekeeper of a nearby country estate. Grace sets about winning over her doubtful colleagues by turning the mismanaged castle around, catching the eye of the Duchess' nephew in the process.

Sherlock Holmes is drawn into a case when arch-enemy Moriarty arranges with an American gang to kill a country gentleman with a mysterious past.