Murder 42 Investigation 29 Police 25 Private investigators 13 History 12 Women detectives 7 Hispanic Americans 5 Sheriffs 5 Crimes against 4 Criminal investigation 4 Criminals 4 Organized crime 4 Police chiefs 4 Detective and mystery stories, Spanish 3 Monsters 3 Policewomen 3 Psychoanalysts 3 Schools 3 Serial murderers 3 Serial murders 3 Trent, Philip (Fictitious character) 3 Women private investigators 3 African American women 2 Assassins 2 Crime 2 Dysfunctional families 2 Ex-convicts 2 Ex-police officers 2 Homicide 2 Human trafficking 2