The key to exercise solutions in chapter 9.3 - The real Sherlock? for the textbook New Total English Upper-Intermediate - Students' Book with authors Araminta Crace and Richard Acklam from Pearson Education
Question
Listen and check your ideas.
Answer
Because his parents were great fans of the original Conan Doyle stories.
People don’t forget you. People make funny comments. People think you can solve mysteries.