They Came Back

They Came Back French Les Revenants , released in the UK as The Returned, is a French zombie film, originally released in 2004. The film was screened at the Hamburg Fantasy Filmfest in Hamburg, Germany, the Venice Film Festival in Italy, and the Toronto Film Festival in Canada.

Without warning the dead begin to return to life, appearing near their burial sites alive and healthy, and heading en masse toward their home towns. The event lasts for roughly two hours, returning an estimated 70 million people to life, all having died within the previousyears more than 13,000 return in the films unnamed city alone. Taking cues from the rest of the country and the U.N., the citys council and mayor Victor Garrivier make plans to house the returned and gradually help reintroduce them to their lives.Reintroduction of the returned proves challenging, due to both the practical and emotional aspects. The returned also suffer from effects similar to those seen after a severe concussion, including lapses in awareness and connection with reality, further worsened by their universal inability to sleep and constant desire to wander. This causes them to perform sluggishly during their day jobs, but a small number of returned are observed having clandestine nighttime meetings with each other where their symptoms seem to vanish. ........

Source: Wikipedia