Eduardo Lucas was a society gentleman and amateur tenor living in London who appears in the The Adventure of the Second Stain. He was secretly a spy for an unnamed foreign country, and is referred to by Sherlock Holmes as one of the best foreign agents in the city. Holmes suspects him of being one of the most likely suspects of the theft of secret government documents from Trelawney Hope, along with Hugo Oberstein and Louis La Rothière. However, Lucas is murdered before Holmes has the change to interview him. It is later revealed that he lived a second life in Paris as "Monsieur Henri Fournaye", and that his wife murdered him because she believed he had been unfaithful. Nevertheless, as she has gone insane, she is of no use as a witness either.
Trivia[]
- Adolph Meyer took Eduardo Lucas's place on the list of "three best agents in London" after Lucas was killed in "The Adventure of the Second Stain".