Originally published in 1917, The Black Box follows expert criminologist Sanford Quest, as he and his colleagues attempt to bring a suspected killer to justice.
An English nobleman and his resourceful niece work together to uncover an international plot that hinges on the actions of a reserved but unpredictable prince.
When an Italian mob named The Red Hand extort the English nation, threatening to release a plague if their financial demands are not met, Professor Tillizini, a clever man, seeks to save his country by dismantling the secret society.
