Guest Post: 6 Ways the FBI Investigates a Potential Threat by DiAnn Mills, author of Deep Extraction

Ever wonder how the FBI investigates a potential threat? Let's welcome suspense author, DiAnn Mills to share with us! If you've read any of her investigative stories, you'll know she knows what she's talking about!

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 DiAnn Mills

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

TO CONNECT WITH DIANN: website, facebook, twitter

About DiAnn's Latest Release
(click on the cover image to take you to my review)

Title:  Deep Extraction
Series: FBI Task Force, Book 2
Author: DiAnn Mills
Publisher:  Tyndale House Publishers
Release Date:  April 4, 2017
Genre: Inspirational Contemporary Suspense

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

BOOKS in FBI TASK FORCE Series (Book 0.5, 1 & 2, more to come)







  1. Absolutely love DiAnn! She is a great advocate of libraries, too! Her blog is special! Suspense is one of my favorite genres!

    1. So true!! Thanks for stopping by! Love DiAnn too!

  2. oooo i love this post! And DiAnn's latest book. And you! :)

    1. Awww.. Right back at ya, my friend! And ditto on all that you said!


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