The Dead Can't Knock (2019)

Haunted by his past, a lonely old man hopes to live out his final days in the apocalypse isolated and alone. When two survivors come banging on his door, he contemplates letting them in or not. The film is set 49 years into the zombie apocalypse, on an isolated and abandoned ranch. Morality is tested as the Old Man remembers his past mistakes and thinks about the future ahead of him.