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Grand Juries Explained: 4 Things Most People Don’t Know

Updated: 3 days ago

Introduction



Most people have heard the term “grand jury,” but far fewer understand what it actually means or how the process works. A basic understanding of how a grand jury is explained in practice can make it easier to follow major criminal cases and legal developments.


While grand juries operate behind the scenes, they play a significant role in the criminal justice system.


1. Grand Juries Are Rooted in the Constitution


Grand juries are not just a procedural tool—they are built into the foundation of the U.S. legal system.


The Fifth Amendment provides that individuals cannot be charged with certain serious crimes without an indictment by a grand jury. This reflects the idea that citizens, not just prosecutors, should play a role in deciding whether criminal charges move forward.


2. They Serve a Different Role Than Trial Juries


Grand juries are often confused with trial (also called petit) juries, but their roles are very different.


  • Grand juries determine whether there is enough evidence to bring charges

  • Trial juries determine guilt or innocence


Grand juries typically consist of 12 to 23 individuals and review evidence presented by prosecutors to decide whether probable cause exists. This standard—probable cause—is significantly lower than the “beyond a reasonable doubt” standard required at trial.


3. The Process Is Conducted in Secret


One of the defining features of grand jury proceedings is confidentiality.

These proceedings are generally not open to the public, and this serves a few key purposes:


  • Encouraging witnesses to speak freely

  • Protecting the integrity of ongoing investigations

  • Preventing potential defendants from interfering with the process


Because of this secrecy, much of what happens during a grand jury investigation is never publicly disclosed.


4. Proceedings Are Less Formal Than a Trial


Grand jury proceedings operate very differently from a courtroom trial.

In most cases:


  • Prosecutors present the evidence

  • Witnesses may be called to testify

  • There is no judge presiding in the same way as a trial

  • Defense attorneys are typically not present inside the room


The process is focused on determining whether enough evidence exists to issue an indictment, not resolving the case itself. If the grand jury finds sufficient evidence, it issues what is known as a “true bill” (an indictment). If not, the case does not proceed.


Why This Still Matters Today


Even though grand juries are rarely seen by the public, they remain a key part of how criminal cases begin, particularly at the federal level.


Understanding how a grand jury is explained in practice helps provide context for:


  • High-profile criminal cases

  • Indictment announcements

  • The early stages of prosecution


Grand Jury Explained


Grand juries have been part of the American legal system for centuries, and despite ongoing debate about their role, they continue to serve as a gateway to criminal prosecution.


Having a basic understanding of how they function makes it easier to follow and interpret legal developments as they unfold.


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About the Author

Cory Raines is a Legal AI Consultant and Founder of Raines Legal Group, where he focuses on legal strategy, business insight, and the intersection of law and emerging technology.

Posted by  Cory D. Raines

The content on this website and blog is provided for general informational and educational purposes only and should not be construed as legal advice. Nothing on this site creates, or is intended to create, an attorney-client relationship.

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