Anna Trewin is the pen name of Sorrel Pitts, an English educational writer, editor, novelist and musician. Sorrel worked as a magazine editor before moving overseas to teach English in Turkey and Spain. On her return to the UK, she became Commissioning Editor for Macmillan Publishers and Editorial Manager for Oxford University Press. She then moved home to Wiltshire and became a freelance editor and writer. Her current key role is Series Editor for PRH’s Penguin and Ladybird Readers series.

As ‘Anna Trewin’, Sorrel has written numerous educational adaptations including Ian McEwan’s The Children’s Act, Richard Osman’s The Thursday Murder Club and Mario Puzo’s The Godfather – which won the international Extensive Reading Foundation Award – and John Le Carré’s The Night Manager (all PRH) as well as original stories Nuala and Champion (Stand For Publishers) and The Scissor Man Caves (PRH).

Sorrel’s debut novel The River Woman was published in September 2011 by Indigo Dreams Press. Sir Michael Parkinson described it as ‘a fascinating story written by a very promising writer’.

In February 2024, Sorrel’s latest novel Broken Shadows was published by Bloodhound Books.