Virtually retired detective persuaded by Inspector MacDonald to investigate three mysterious deaths in London's East End. He later assists the Home Secretary and Graf von Felseck in locating a missing German envoy, suspecting both cases are interconnected and that someone is concealing the truth.
Holmes is treated as a specialist investigator by the British government.
The Home Secretary visits Holmes and asks him to locate a missing German envoy.
MacDonald brings Holmes back into active investigative work.
Inspector Alec MacDonald persuades the virtually retired Sherlock Holmes to investigate three unexplained deaths in London's East End.
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