A native of Dundee, Marion studied music and worked for many years as a piano teacher and jobbing accompanist. A spell as a hotel lounge pianist provided rich fodder for her writing and she began experimenting with a variety of genres. Early success saw her winning first prize in the Family Circle Magazine Short Story for Children national competition and she followed this up by writing short stories and articles for her local newspaper. Marion has also worked as a college lecturer, plantswoman and candle-maker and now is a full-time writer, penning the DI Clare Mackay series of crime fiction novels set in St Andrews. The first of these, SEE THEM RUN, was shortlisted for the Bloody Scotland Scottish Crime Debut Novel of the Year 2020.