House of Time

Robert d'Eglantine invites five of his friends to spend a week-end in his castle, lost in the woods. He explains to them that he studied secret documents on nazi scientific researchs during World War II. These researches were on time travelling and he's able now to take his guests into an amazing trip seventhy years back in time, in 1944, during the Occupation and only few weeks before the landing in Normandy. The demonstration seems to be a big joke but once in the past our characters will be facing troubling events. Real time travel or devilish game meticulously crafted?