I was born in London in 1976 and grew up in Essex. I read English at Warwick University and began working as a journalist in 1998.

My first novel The Poison Tree became a major ITV drama and a Richard & Judy bestseller, and was longlisted for the 2011 CWA John Creasy Award. The Sick Rose, The Burning Air and The Ties That Bind were all published to critical acclaim and my books have been translated into 19 languages. In 2014, I wrote the novelisation of the BAFTA-winning Broadchurch but sadly did not get to meet David Tennant.

As well as writing fiction I continue to work as a journalist and also teach creative writing. I live in north London with my husband and daughters.