I was 10 years old when I read my first crime fiction novel. A charity shop copy of Agatha Christie’s 1935 Death in the Clouds, gifted from my gran. For the 38 years since I have devoured crime fiction and thrillers. And I am not alone. In the UK in June 2020, the publishing industry saw a crime genre sales boom, with 120,000 more crime and thriller titles bought than in June 2019.