Multi-award winning Mari Hannah is the author of the Stone & Oliver crime series, the Ryan & O'Neil series and the DCI Kate Daniels series. In July 2010, she won a Northern Writers' Award for Settled Blood. In 2013, she won the Polari First Book Prize for her debut, The Murder Wall. She was awarded the CWA Dagger in the Library 2017 as the author of the most enjoyed collection of work in libraries. In 2019, she was awarded DIVA Wordsmith of the Year. In that same year, Mari was Programming Chair of the Theakston Old Peculier Crime Festival. In 2020, Mari was named as DIVA 'Wordsmith of the Year' and won Capital Crime's 'Crime Book of the Year' award. She lives in Northumberland with her partner, an former murder detective.