After reading this chapter you will be able to:

10.1 Discuss several methods of obtaining crime information from the public, including tip lines, television shows, and AMBER Alerts.
10.2 Explain the value of video in criminal investigations.
10.3 Discuss the ways social media can be used by investigators.
10.4 Discuss the role of confidential informants in criminal investigations.
10.5 Explain why gang intelligence may be useful in criminal investigations.
10.6 Discuss information networks as a source of information in criminal investigations.
10.7 Discuss the value of psychics in criminal investigations.