Here to Stay is another example of why Mark Edwards is one of the most prolific mystery writers of our time. Any writer that wants to learn the art of the twist should spend time reading his novels. Well, I thought that my husband had the worst in-laws possible but maybe I was wrong! Here to Stay is a cautionary tale about never letting your in-laws come to stay. They’ll get their feet under the table, all cosy and relaxed, and the next thing you’ll know they’ll be looking at furniture in Ikea and redecorating your sitting room. Just the thought of it brought chills down my spine. Here to…