The fisherman's Catch

A space-alien has come to an island occupied by marooned American sailors during WWII. He has built a weapon that turns people into Zombies. The ray machine worked on all but one man on the island... it made him look different. After ten years of captivity that man, by an act of fate, escapes the island and returns home to ask his old friend, Jack Wills, for help in stopping the alien.