Crown Disclosure: Your Right to See the Evidence

One of the most important principles in Canadian criminal law is that the accused has a right to see the evidence the Crown intends to use against them — and, critically, evidence that may help the defence, even if the Crown does not plan to use it at trial. This right is not a courtesy. It is a constitutional obligation rooted in the Charter of Rights and Freedoms and is foundational to a fair trial.

This guide explains what Crown disclosure is, what it includes, when you should receive it, and what to do if the Crown's disclosure is incomplete or delayed.

The Legal Foundation: R v Stinchcombe

The right to disclosure was established by the Supreme Court of Canada in the landmark 1991 decision R v Stinchcombe. In that case, the Supreme Court held that the Crown has a duty to disclose all relevant information in its possession to the accused, whether or not the Crown intends to introduce it as evidence at trial. The only exception is information that is clearly irrelevant or subject to a recognized legal privilege (such as informer privilege).

The rationale is straightforward: the purpose of a criminal trial is not to secure a conviction but to arrive at the truth. An accused person cannot meaningfully exercise the right to make full answer and defence — guaranteed under sections 7 and 11(d) of the Charter — without knowing the case they have to meet.

The Stinchcombe decision was a turning point in Canadian criminal law. Before it, disclosure practices varied widely and were often inadequate. Today, the Crown's duty to disclose is well established and rigorously enforced. Failure to disclose relevant evidence can lead to a stay of proceedings, the exclusion of evidence, or a new trial on appeal.

What Disclosure Includes

Crown disclosure typically includes all materials gathered during the police investigation and in the Crown's possession that are relevant to the case. The specific contents vary depending on the nature of the charges, but a disclosure package commonly includes:

• Police officers' notes: Handwritten or typed notes made by the investigating officers and any other officers involved in the case. These notes record what the officers observed, said, and did.
• Witness statements: Written or recorded statements from civilian witnesses, complainants, and any other persons interviewed during the investigation.
• The accused's statement: If the accused gave a statement to police, a copy or transcript will be included. If the statement was video recorded, the recording itself forms part of disclosure.
• 911 call recordings: Audio recordings of any 911 calls related to the incident.
• Photographs and video: Crime scene photographs, surveillance camera footage, body-worn camera footage, and any other photographic or video evidence.
• Expert reports: Reports from forensic scientists, toxicologists, medical examiners, or other experts. In impaired driving cases, this may include breathalyzer or blood alcohol test results and the qualifications of the technician.
• Criminal record of the accused: A copy of the accused's criminal record, if any, as obtained by police.
• Occurrence reports: The initial police report documenting the alleged offence and the circumstances of the investigation.
• Forensic evidence: DNA analysis, fingerprint comparisons, digital forensics (cell phone data, computer records), and related lab reports.
• Prior judicial history of witnesses: In some cases, information about a key witness's criminal record or pending charges may be relevant and disclosable.

The Crown is also obligated to disclose evidence that may be favourable to the defence. This includes witness statements that are inconsistent with the Crown's theory, evidence suggesting another person may have committed the offence, and anything else that could reasonably assist the accused in making full answer and defence.

When Disclosure Is Provided

Disclosure should be provided as soon as reasonably possible. In practice, the initial disclosure package is typically made available shortly after the first court appearance. Defence counsel will request disclosure from the Crown at or around the first appearance, and the Crown's office — operating under the guidelines of the Ontario Crown Prosecution Manual — prepares the package.

For straightforward cases — a simple assault charge, for example — initial disclosure may be ready within a few weeks of the first appearance. For more complex cases involving forensic evidence, multiple witnesses, or extensive electronic evidence, disclosure may arrive in stages over several months.

Disclosure is an ongoing obligation. If the Crown comes into possession of new evidence at any point during the proceedings — even after the trial has begun — it must be disclosed to the defence. This includes evidence arising from further investigation, new witness statements, or results from forensic testing that were pending at the time of the initial disclosure.

In Ontario, disclosure is increasingly provided in electronic format — PDF documents, audio files, and video files on a USB drive or through a secure online portal. Your lawyer will receive the disclosure and review it thoroughly before discussing the case with you.

Reviewing Disclosure: What Your Lawyer Looks For

Disclosure review is one of the most important tasks your defence lawyer performs. A thorough review of the disclosure package can reveal:

Weaknesses in the Crown's case: Inconsistencies between witness statements, gaps in the investigation, missing evidence, or procedural errors by police.

Charter breaches: Evidence that your rights were violated during the investigation — for example, an unlawful search under section 8 of the Charter, a failure to provide access to counsel under section 10(b), or a violation of your right to silence. If a Charter breach is established, the evidence obtained as a result may be excluded under section 24(2) of the Charter.

Defences: Facts that support a defence — self-defence, identity issues, alibi, consent, or lack of the mental element (mens rea) required for the offence.

Sentencing considerations: If the case is likely to result in a guilty plea, the disclosure will help your lawyer assess the appropriate sentencing range and negotiate effectively with the Crown.

Your lawyer may also identify additional disclosure that should have been provided but was not. This is not uncommon, and it does not necessarily indicate bad faith — police investigations generate large volumes of material, and items can be overlooked.

What to Do If Disclosure Is Incomplete

If your lawyer believes that the Crown's disclosure is incomplete, there are several steps that can be taken:

Request the missing material from the Crown: The first step is always a direct request. Defence counsel will write to the Crown identifying the specific material that appears to be missing and requesting its production. In most cases, this resolves the issue.

Raise the issue in court: If the Crown does not respond adequately to a written request, defence counsel can raise the disclosure issue before the judge. The court can order the Crown to produce specific materials.

Bring a disclosure motion: In more serious cases of non-disclosure, the defence can bring a formal motion seeking an order compelling disclosure. The court may also provide a remedy if the non-disclosure has prejudiced the accused's ability to make full answer and defence.

Seek a stay of proceedings: In extreme cases, where the Crown's failure to disclose has been so serious and so prejudicial that a fair trial is no longer possible, the defence can apply for a stay of proceedings under section 24(1) of the Charter. This is a drastic remedy and is reserved for the most egregious circumstances, but it reflects the seriousness with which Canadian courts treat the obligation of disclosure.

The Supreme Court of Canada has held that the Crown's failure to disclose relevant evidence, even if unintentional, can constitute a violation of the accused's Charter rights. The right to disclosure is not discretionary — it is a constitutional guarantee.

Third-Party Records and Special Disclosure Issues

Some cases involve materials that are not in the Crown's possession but may be relevant to the defence. These are known as third-party records, and obtaining them requires a special procedure under sections 278.1 to 278.91 of the Criminal Code.

Third-party records may include:

• Medical records of the complainant
• Therapeutic or counselling records
• School records
• Employment records
• Records held by child welfare agencies

Access to third-party records is carefully controlled to balance the accused's right to full answer and defence against the privacy rights of the person whose records are sought. The defence must bring an application under the Criminal Code, and the court reviews the records privately before deciding whether to release some or all of them to the defence.

In cases involving allegations of domestic assault or sexual assault, third-party records applications are particularly common and can be a significant part of the defence strategy.

Disclosure and Your Role as the Accused

While your lawyer handles the legal process of obtaining and reviewing disclosure, you play an important role as well. You know your own case better than anyone, and you may be able to identify gaps or inaccuracies in the disclosure that your lawyer would not otherwise catch.

When your lawyer shares the disclosure with you, review it carefully and make note of:

• Anything that appears inaccurate or inconsistent with your recollection of events
• Witnesses who were present but whose statements do not appear in the disclosure
• Surveillance cameras or other recording devices that may have captured relevant footage
• Any communications (text messages, emails, social media messages) between you and other parties that might be relevant

Share these observations with your lawyer. The combined effort of a thorough lawyer and an engaged client produces the best results.

Crown disclosure is not just a procedural step — it is the foundation upon which every criminal defence is built. Without knowing the evidence, no defence lawyer can properly advise their client, negotiate with the Crown, or prepare for trial. If you are facing criminal charges, ensuring that you have complete and timely disclosure is one of the first and most important priorities. Contact a criminal defence lawyer to discuss your case and ensure your right to disclosure is fully protected.