Investigation Murder 61 Police 11 Criminal investigation 9 Missing persons 8 Man-woman relationships 7 Detectives 5 más ... Criminal behavior 4 Policewomen 4 Murderers 3 Serial murderers 3 Women detectives 3 Employees 2 Fathers and sons 2 Human trafficking 2 Inheritance and succession 2 Mothers and daughters 2 Race relations 2 Women journalists 2 Abandoned children 1 Abduction 1 Absence without leave 1 Actions and defenses 1 Adult children of alcoholics 1 Adultery 1 African American detectives 1 Alcoholics 1 Amnesia 1 Anonyms and pseudonyms 1 Antisemitism 1 menos ...