May 14, 2017 / Last updated : October 2, 2018 Examiner's Head GCSE Revision THE SIGN OF FOUR: AQA ENGLISH LITERATURE PAPER 1 Conan Doyle’s The Sign of Four is a favourite with teachers. Why? It’s shorter than the other texts. Only reason. It’s not bad, but a lot of you struggle. Here’s a little overview of how to approach the exam which I hope helps.