Only one comment and a very negative one.It's not that much bad.It will never be a horror classic but it's original,it has a screenplay (95% of horror movies rely on special effects today),and two very good leads:Anny Duperey -some users will remember she was Al Pacino's co-star in "Bobby Deerfield" - is a very attractive woman who never had on the silver screen the parts she deserved and had to content herself with mediocre telly series.She plays a doctor who arrives on an island to be confronted with mystery and a disturbing colleague,doctor Marshall (Jean-Claude Brialy ,whose mischievous performance verges on camp).Domestic appliances go crazy and people are disfigured,maimed,burned ,you name it.And they are unplugged at that! Leroi creates fear in the kitchens and I'm not sure that,after watching "le demon dans l'ile" ,you will use a razor,a stove ,a coffee-maker and even a glass without a reservation.
One can deplore the ending,which is borrowed from De Palma's "Carrie" .But all that remains is entertaining,and Duperey displays resilience and authority all along the way.