GCSE English Literature text An Inspector Calls, by J. B. Priestley, is discussed in this short presentation by historian of science, Professor Charlotte Sleigh. Prof Sleigh investigates how Priestley’s play was influenced by the strange experiences of a man who believed he could time travel in his dreams. She gives students a way to meet the AQA GCSE assessment objective: understand the relationship between the text and the context in which it was written.