Zeder is not a zombie movie actually. It is more into a ghost story blended with mystery elements.
Pupy Avati is a great Italian director and this film is one of his best I think. If you are interested into thinkable horror films, this is your stuff.
The story starts like this. When Alessandra buys a second hand typewriter as a present to her lover and journalist Stefano, he finds out some secret imprints on the ribbon, written from its last owner. Paolo Zeder used that type machine and he had discovered K-Zones, areas in which the dead are restored to life back in the 1950's. Stefano's investigations bring him in contact with a group of renegade scientists that are still making experiments to prove Zeder's theories. But what is the cost of this strange discovery and where it shall lead Stephano?