Man-woman relationships 419 Families 219 Murder 137 History 129 Good and evil 102 Revenge 100 Friendship 97 Human-alien encounters 92 Fathers and sons 84 Survival 81 Superheroes 79 Death 69 Monsters 69 World War, 1939-1945 65 Teenagers 62 Assassins 60 Supernatural 60 Police 56 Fathers and daughters 50 Investigation 50 Time travel 48 Criminals 47 Heroes 47 Kidnapping 47 Magic 47 Crime 43 High school students 43 Spies 43 Teenage girls 43 Life on other planets 42