This is a continuously updated list of recommended resources for further true crime reading, last added to on October 22, 2017. 

General Resources

Cold Cases

By Location (United States)

• Alabama AG: Cold Case Investigations
• Colorado Bureau of Investigations: Cold Cases
• Connecticut Division of Criminal Justice: Cold Case Investigations 
• Delaware State Police: Cold Cases
• East Idaho Cold Cases
• Georgia Bureau of Investigations
• Illinois State Police: Unsolved Crimes
• Iowa Cold Cases
• Kentucky State Police Cold Cases
• Maine State Police: Unsolved Homicides
• Michigan State Police: Cold Cases
• Minnesota Bureau of Criminal Apprehension: Spotlight on Crime
• New Hampshire DOJ: Cold Case Unit
• North Dakota AG: Cold Cases
• Ohio AG: Unsolved Homicides
• Pennsylvania Crime Stoppers: Cold Cases

 

Missing Persons

• The Charley Project
• The Doe Network
• The National Center for Missing and Exploited Children
  
• National Missing Persons Data System (United States)
• Wikipedia –  List of People Who Disappeared Mysteriously

Serial Killers

• FBI Vault Serial Killer Files
• Murderpedia
• Radford University’s Serial Killer Information Center
• True Crime and Justice: Serial Killers
• Wikipedia: List of Serial Killers in the United States

Unidentified Decedents

• The Doe Network
• National Unidentified Persons Data System (United States)
• FBI ViCAP Unidentified Persons (United States)
• Wikipedia: Unidentified Decedents in the United States

Research and Investigation

Crime Classification

• FBI Crime Classification Manual, 2nd edition (large pdf file)

Criminal/Forensic Psychology

• Dr. M. G. Aamodt: Forensic Psychology Research

Missing Persons Statistics, Legislation, and Investigation

• “Comparative Approaches to Missing Persons Procedures: An Overview of British, American and Australian Policies,” Missing Women Commission of Inquiry (2012)
• Kristin’s Act: authorized the Attorney General to provide grants for organizations to find missing adults (2000)
• “Missing and Abducted Children: A Law Enforcement Guide to Case Investigation and Program Management” (NCMEC)
• Missing Children Statistics (NCMEC)
• The Missing Children’s Assistance Act (42 USC § 5771 et seq.)
• New York State Division of Criminal Justice Services: Missing Persons Data Collection Guide

The Criminal Justice System

• Executed Today – A History of Capital Punishment
• True Crime and Justice: Legal Resources

Victim and Co-Victim Resources

• The National Center for Victims of Crime (United States)
• The National Organization of Parents of Murdered Children (United States)