Panic in Year Zero!

While on a fishing trip, Harry Baldwin and his family hear an explosion and realize that Los Angeles has been leveled by a nuclear attack. Looters and killers are everywhere. Escaping to the hills with his family, he sets about the business of surviving in a world where, he knows, the old ideals of humanity will be the first casualties.

Starring Ray Milland, Jean Hagen, Frankie Avalon