The Other One

The physicist Walter moves into a new apartment in the 1970s and works there on a paper about time travel. In his new home, however, he is haunted by uncanny events. Is it the spirit of his previous tenant who disappeared under mysterious circumstances? Walter hears strange noises and feels persecuted and watched. Although his fiancée Marianne does not believe him, Walter sticks to his theory and realizes that the other one is even trying to get in touch with him - from the future!