English fiction 18 Investigation 18 History 17 Murder 17 Family life 14 Private investigators 11 Fiction 9 September 11 Terrorist Attacks, 2001 9 City planning 8 Schools 8 Young women 8 Architecture 7 Building failures 7 New York (N.Y.) 7 Skyscrapers 7 Social life and customs 7 Terrorism 7 Crime scene searches 6 Death 6 Drama 6 Female friendship 6 Police 6 Twins 6 Adventure and adventurers 5 Fire fighters 5 Shopping 5 Women private investigators 5 Adultery 4 Apartment houses 4 Apartments 4