Through J.K. Rowling’s Twitter header photos, we are provided with clues about what she’s currently writing. Here are all her Strike header photos over the years.

1 June 2017: The Three Fates sculpture by Johann Gottfried Schaddow on Prince Alexander von Mark tomb. Mentioned in Lethal White.

18 August 2017: Swans are a theme in Lethal White.

4 October 2017: ‘Death on the Pale Horse’ by Benjamin West. White horses are a theme in Lethal White.

3 December 2017: Denmark Street

5 December 2017: London

13 February 2018: St Mary Undercroft in the Houses of Parliament.

6 March 2018

13 May 2018: The Pelican in Her Piety features in The Ink Black Heart.

20 August 2018

15 November 2018: St John’s Gate, Clerkenwell, from Illustrated News of the World (1859)

5 December 2018: Christmas lights in Regent’s Street, London.

2 May 2019: The constellation of Capricorn.

23 November 2019: Aleister Crowley’s Thoth tarot cards.

25 January 2020: Aleister Crowley’s natal star chart.

20 March 2020: The Faerie Queene by Edmund Spencer (Walter Crane, 1896 edition)

16 July 2020: The astronomical clock at Hampton Court Palace.

19 July 2020

7 June 2021: George Wombwell’s tomb in Highgate Cemetery.

4 March 2022: Cromer Pier, Norfolk.

19 April 2022

17 June 2022: Highgate Cemetery

29 August 2022

2 January 2023: Cromer promenade.

3 January 2023: I Ching (or The Book of Changes) hexagram.

21 January 2023: St John the Baptist church, Aylmerton, Norfolk

31 March 2023: Lion’s Mouth, Aylmerton

19 April 2023: Rupert Court, Chinatown, London

15 June 2023

16 August 2023

1 February 2024: Detail from the front of the Freemasons’ Hall, Great Queen Street, London

16 February 2024: La Coupée, Sark, The Channel Islands

16 March 2024: English hallmarked sterling silver neff sailing ship

7 April 2024: Crieff, Perthshire, Scotland