Thorne was born in Luton and graduated from Aberystwyth University (history) and from the Open University (Law). She set up a restaurant with her sister but now spends her time writing and making miniature furniture for collectors. She lives in Pembrokeshire, which forms a background for her writing and her first novel, A Time For Silence, was published in 2012. Her second novel, Motherlove, was published in 2015. She's a member of the Crime Writers Association.