Chesterton's talent as a mystery writer is displayed in this collection of detective stories, The Man Who Knew Too Much. In each story, the star detective, Horne Fisher, deals with another strange mystery: the vanishing of a priceless coin, the framing of an Irish "prince" freedom fighter, an eccentric rich man dies during an obsessive fishing trip, another vanishing during an ice skate, a statue crushing his own uncle, and a few more.
"The Prince who Knows Paradox Too Well"
To solve one of the great mathematical problems of his day, Alan Turing proposed an imaginary computer. Then, attempting to break a Nazi code during World War II, he successfully designed and built one, thus ensuring the Allied victory. Turing became a champion of artificial intelligence, but his work was cut short. As an openly gay man at a time when homosexuality was illegal in England, he was convicted and forced to undergo a humiliating "treatment" that may have led to his suicide.
"First Audible Book I Returned"
Horne Fisher is extremely well connected. The plans of prime ministers, foreign ambassadors, and chancellors are matters of table conversation - usually because these people are dining with him. And when a man so well connected is also a brilliant detective, all sinister motives and plots systematically unfold. Whether it is a case of police corruption, or a war with Sweden, Horne Fisher can always solve it. But Horne Fisher is also a philosopher, and not a policeman, and the murderer is seldom punished.