The sequel to the canonical story, The Three Students. As Holmes and Watson sit at breakfast having solved the case, the wrongdoer they have just identified interrupts them.
A fourth student, his main rival in the long-jump, is behaving in a very peculiar manner, and is carrying all before him on the sports-field.
The trail takes Holmes and Watson to a barber’s shop where they acquire a preparation which the barber markets as a performance enhancer.
But this is by no means the end of a murky trail to discover how to win Olympic gold.