The Adventure of the Priory School

The powerful Duke of Holdernesse’s son is missing. The boy was last seen in the Priory School but shortly after he received a letter from his father, he was nowhere to be seen. The main suspect was the German master because he went missing the same day as the boy. The Priory School’s director reached out to Watson and Holmes who followed after the boy’s steps. Will they solve the case and find the boy? Did the boy went somewhere by himself or someone kidnapped him?
Find the answers in "The Adventure of the Priory School" which is a part of "The Return of Sherlock Holmes".
Sir Arthur Conan Doyle (1859-1930) was born in Scotland and studied medicine at the University of Edinburgh. After his studies, he worked as a ship’s surgeon on various boats. During the Second Boer War, he was an army doctor in South Africa. When he came back to the United Kingdom, he opened his own practice and started writing crime books. He is best known for his thrilling stories about the adventures of Sherlock Holmes. He published four novels and more than 50 short-stories starring the detective and Dr Watson, and they play an important role in the history of crime fiction. Other than the Sherlock Holmes series, Doyle wrote around thirty more books, in genres such as science-fiction, fantasy, historical novels, but also poetry, plays, and non-fiction.