It’s the middle of summer. On Cornish sea-fronts, happy children grip melting ice-creams. In the south of France, sunlight filters through leaves as families picnic in the shade. And in the fashionable resorts of the Mediterranean, the beautiful people sun themselves on picture-postcard beaches. And in those long, hot summer nights murder walks abroad. Away from familiar surroundings, and as the temperature rises, old grudges come to the surface, new hatreds reach boiling point – and clever minds start to make dangerous plans. These ten classic mysteries, from some of the finest crime writers, prove that no matter where you travel to – there’s no rest for the wicked.