Set of 4 Vintage Alfred Hitchcock books, France, Mystery series French

Le démon qui dansait la gigue (Alfred Hitchcock) L'épouvantable épouvantail (Alfred Hitchcock) Le testament énigmatique (Alfred Hitchcock) Une araignée appelée a régner (Alfred Hitchcock) Translated to French, published by Hachette Jeunesse (Bibliothèque Verte). From the Vintage Mysterys & The 3 Investigators series (Les Trous jeunes détectives) 4 paperbacks. Tells the story of three young boys, approx. 12-14 who solve mysteries that seem to be supernatural at first (e.g. an ancient Egyptian mummy that appears to be whispering) but are ultimately explained scientifically. CONDITION: A few creases to the cover of 'Araignée' and yellowed pages; some rose marks on paper edge of 'Testament'; other two have light use. All have solid binding.