Sherlock Holmes and Watson, on a research trip in a university town, are approached by a professor. The professor believes someone has entered his office and seen, and perhaps copied, the examination papers he is to administer the next day. Holmes begins by narrowing down the suspects to three students who live nearby. After studying several innocuous pieces of evidence, he believes he has identified the culprit. All that remains is to elicit the confession.
Sir Arthur Conan Doyle (UK 1859-1930) Escritor y médico nacido en Escocia, principalmente conocido por haber creado al famosísimo personaje Sherlock Holmes, el detective más conocido de todos los tiempos, versionado para TV y cine de forma cíclica. Otra gran serie de novelas confeccionadas por Doyle fueron las protagonizadas por el profesor Challenger (El Mundo Perdido), también trasladadas a la ficción audiovisual.