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6 Ways the FBI Investigates a Potential Threat

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6 Ways the FBI Investigates a Potential Threat

03 May Posted by in Articles | Comments Off on 6 Ways the FBI Investigates a Potential Threat
6 Ways the FBI Investigates a Potential Threat

DiAnn Mills is one of our favorite mystery/suspense authors. Recently, she pulled back the curtain to show us a little of what it takes to make sure her books are accurate. And don’t forget to pick up a copy of her latest release, Deep Extraction, available now! 


DiAnn Mills

Deep Extraction





6 Ways the FBI Investigates a Potential Threat


Curious about how the FBI examines information that could lead to a crime? In writing my stories, I need to ensure my FBI characters approach a possible crime with accuracy. To answer this question, I talked to my friend, Shauna Dunlap, Special Agent/Media Coordinator for Houston’s FBI.


“There are several ways we can investigate potential threats depending on the nature of the threat and the medium from which it is transmitted. Most common today is social media, email, and we still have the old fashioned phone call threats too. Obviously, each case is different, and we conduct a logical investigation where the evidence leads us. Below are some of the typical ways we will investigate potential threats.”


  1. Canvas human sources for information.
  2. Conduct interviews of witnesses/human sources.
  3. Subpoena phone/email/social media records.
  4. Subpoena cell phone tower data for towers near where threat received/timing of threat.
  5. Bomb dog sweep of Special Agent Bomb Technician sweep of potential threat location.
  6. Review of surveillance video, if applicable.


The FBI’s mission is to “The mission of the FBI is to protect the American people and uphold the United States Constitution.” Are you looking for more information about the FBI? Visit



About Deep Extraction:


FBI Task Force, Book 2


A pacemaker should have saved oil and gas magnate Nathan Moore’s life. Instead, it provided his killer with a seemingly perfect means of execution.

A bombing at one of Nathan’s oil rigs days earlier indicates his death could be part of a bigger conspiracy, a web Special Agent Tori Templeton must untangle. But her first order of business is separating the personal from the professional—the victim’s wife, her best friend, is one of the FBI’s prime suspects.

Clearing Sally’s name may be the biggest challenge of her career, but Tori finds an unexpected ally in the newest member of the task force, recently reinstated Deputy US Marshal Cole Jeffers. As Tori and Cole dig deeper into Nathan’s personal and business affairs, they uncover more than they bargained for. And the closer they get to finding the real killer—and to each other—the more intent someone is on silencing them for good.


Click here to read an excerpt!


Short bio:


Award-winning author DiAnn Mills combines an adventuresome spirit with unforgettable characters to create action-packed novels. DiAnn’s first book was published in 1998. She currently has more than 50 books in print, which have sold more than a million and a half copies and appeared on the CBA and ECPA bestseller lists. DiAnn also won back-to-back Christy Awards in 2010 and 2011 for Breach of Trust and Sworn to Protect, the first two books in her Call of Duty series. Her online home is


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