R. v. Stinchcombe: Involves the Mandate to Disclose All Relevant Evidence | Lo Greco Law


Last Updated: August 22 2026

Question:If prosecutors might not disclose certain witness statements, can R. v. Stinchcombe help me understand the disclosure duty in Ontario criminal cases?

Answer:R. v. Stinchcombe, [1991] 3 S.C.R. 326 confirms that the Crown prosecutor must disclose all relevant information to the defence, even if the Crown does not intend to call a particular witness, to protect the accused’s right to make full answer and defence.   If you’re facing a disclosure delay or missing materials in an Ontario matter, Lo Greco Law provides 30+ year experienced lawyer services and LSO tribunal representation to help you review the disclosure record, identify disclosure issues, and plan effective next steps for fair-trial concerns.   For prompt guidance on your options in your case, call (416) 488-4110 today.

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Decision Summary: R. v. Stinchcombe:

The case of R. v. Stinchcombe, [1991] 3 S.C.R. 326, was a landmark decision in Canadian criminal law rendered by the Supreme Court of Canada.  The case centered around the obligation of the Crown prosecutor to disclose evidence to the defence.  The decision significantly influenced the principles of fair trial and the legal duty of disclosure imposed upon prosecutors.  Key issues include:

Note: Please contact Lo Greco Law by phone at: (416) 488-4110 to discuss any specific questions that you may have.

  • Obligation to Disclose Evidence:
    The primary legal issue was whether the Crown prosecutor is obliged to disclose all relevant information to the defence, including statements from witnesses that the Crown is without an intention to call to testify at Trial.
  • Impact Upon the Right to a Fair Trial:
    The case highlighted the implications of a failure to disclose evidence upon the ability of an accused person to make full answer and defence as well as stressing the importance of transparency so to ensure a fair trial.
  • Judicial Review of Discretion:
    The case also addressed the role of the trial judge when reviewing the discretion of the Crown prosecutor to withhold evidence perceived as irrelevant and the principles guiding such discretion.
Details and Insights
  • Legal Duty to Disclose:
    The Supreme Court held that the Crown prosecutor must disclose all relevant information to the defence including material that the Crown prosecutor plans to forgo relying upon at trial.
  • Precedent in Canadian Justice System:
    The decision set a precedent ensuring that the accused person can prepare an adequate defence by having access to all pertinent information held by the prosecution.
  • Strategic Legal Approaches:
    The ruling underscored the need for prosecutors to exercise discretion transparently and responsibly.

Gaining an understanding of this case can assist legal professionals and clients navigating similar legal scenarios.  Explore the full case judgment for more detailed information and specific legal arguments.

The official case judgment is available here: R. v. Stinchcombe, [1991] 3 S.C.R. 326

Conclusion

The Stinchcombe case underscores the critical importance of disclosure in ensuring a fair trial within the Canadian legal framework.  The principles articulated in the case decision emphasize the necessity for prosecutors to share all relevant information with the defence thereby promoting fairness and justice.

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