When Investigations Cross the Line: A Case Review of R. v. Mitch Dubros

The role of a private investigator in the criminal justice system is both valuable and delicate. Investigators are often relied upon by defence counsel to locate witnesses, test evidence, and uncover facts that may not be readily available through traditional channels. However, the case of R. v. Dubros demonstrates how quickly that role can shift from legitimate fact-finding into criminal exposure when boundaries are not carefully maintained.

This case arose from the actions of a seasoned private investigator, Mitch Dubros of Hotline Investigations, who had been retained by a criminal defence lawyer to assist in preparing for a preliminary inquiry. The lawyer’s client was facing several charges, including harassment and obstruction of justice, and the investigator was tasked with interviewing the complainant and individuals connected to her. What followed were a series of recorded interactions that would ultimately form the basis of a criminal prosecution—not against the client, but against the investigator himself.

The investigator’s conversations with witnesses were not disputed. He recorded them, and transcripts were entered into evidence. The issue was not whether the statements were made, but how they should be interpreted. During these interactions, the investigator made comments suggesting that he had the ability to uncover damaging information about the individuals he was speaking to and that such information could be exposed. He spoke of being able to “find dirt,” to “expose” people, and to affect their professional reputations. While he maintained that these statements were meant to explain the legal process and the potential use of information in court, the Crown took a very different view. It argued that the statements were designed to exert pressure—either to persuade the complainant to resolve the case through a peace bond or to discourage witnesses from participating in the proceedings altogether.

At trial, the central issue became one of intent. The law is clear that attempting to obstruct justice requires more than questionable conduct; it requires proof that the accused intended to interfere with the administration of justice. The investigator testified in his own defence, stating that he had no intention of intimidating anyone. He described his actions as a miscommunication or an error in wording, not a deliberate attempt to threaten or influence. He emphasized that his goal was simply to understand why the matter had not already been resolved and to communicate the potential legal realities to those involved.

The jury ultimately rejected this explanation and found that the investigator had wilfully attempted to obstruct justice. In doing so, they accepted the Crown’s position that the statements, taken in context, were not neutral explanations but rather carried an implied threat that could reasonably influence a witness’s behaviour.

The case proceeded to the Court of Appeal for Ontario, where the investigator challenged both his conviction and the sentence imposed. A significant portion of the appeal focused on how the trial judge had instructed the jury, particularly in relation to intent and the concept of reasonable doubt. The defence argued that the jury may have been left with the impression that intent was not a necessary requirement for conviction, and that the judge failed to provide adequate clarification when the jury asked questions during deliberations.

The Court of Appeal carefully reviewed the instructions and rejected these arguments. It found that, when read as a whole, the jury charge made it clear that intent was an essential element of the offence and had to be proven beyond a reasonable doubt. The court also held that the trial judge acted appropriately in responding to the jury’s request for clarification on reasonable doubt by repeating the standard, well-established instruction rather than attempting to rephrase or simplify it. In the court’s view, introducing alternative language or examples could have created confusion rather than resolving it.

Another important aspect of the appeal was the use of the professional Code of Conduct governing private investigators. The trial judge had allowed the Code to be entered into evidence to provide context regarding the professional obligations expected of someone in the investigator’s position. The defence argued that this may have unfairly influenced the jury or that the judge failed to properly explain how it should be used. The Court of Appeal disagreed, emphasizing that the jury had been clearly instructed that a breach of the Code, on its own, was not enough to establish criminal liability. The Code was relevant only as background—it did not define the offence, nor did it replace the requirement to prove intent.

While the conviction was upheld, the Court of Appeal took a markedly different view of the sentence. The trial judge had imposed a custodial sentence of 18 months, followed by three years of probation. In reassessing the appropriate penalty, the appellate court focused on several key factors that had not been given sufficient weight. The investigator was a first-time offender with a long-standing career and no prior criminal history. His actions, while serious, were found to be out of character and not motivated by any personal gain. Importantly, by the time of the appeal, he had lost his private investigator’s licence—a consequence that the court recognized as both significant and effectively permanent. (His private investigation license has since been re-instated).

The court concluded that the original sentence placed too much emphasis on general deterrence, particularly in the absence of any evidence that this type of misconduct was widespread within the profession. It determined that a custodial sentence was disproportionate in the circumstances and substituted a conditional sentence of two years less a day. This included a period of house arrest followed by strict curfew conditions, along with the probation order originally imposed.

What makes R. v. Dubros particularly significant for those working in the investigative field is how clearly it illustrates the risks associated with overstepping professional boundaries. The investigator in this case did not fabricate evidence, interfere physically with witnesses, or engage in overtly criminal conduct in the traditional sense. Instead, the case turned on the tone, wording, and perceived implications of his communications. The decision reinforces that in the context of criminal proceedings, even implied pressure or poorly framed statements can be interpreted as an attempt to interfere with justice if they carry the potential to influence a witness.

For private investigators, the lesson is not simply to avoid wrongdoing, but to exercise constant awareness of how their actions may be perceived by others—particularly in adversarial legal environments. The line between legitimate investigative work and obstruction is not always defined by intention alone; it is shaped by how conduct is understood in context. Maintaining professionalism, neutrality, and clarity in all communications is essential, not only to protect the integrity of an investigation but also to protect the investigator themselves.