Ontario Private Investigator study materials
Ontario Private Investigator study resources

Ontario Private Investigator key terms

Ontario Private Investigator · Get comfortable with the vocabulary.

Private Investigator Licence

A credential issued by Ontario's Chief Registrar under the Private Security and Investigative Services Act, 2005 that authorizes the holder to perform private investigation services for remuneration. Licensees must carry their licence card while working.

Related: Chief Registrar, Code of Conduct
Chief Registrar

The senior official in Ontario's Ministry of the Solicitor General who administers the licensing regime for security guards and private investigators: issuing, renewing, suspending and revoking licences, and receiving complaints about licensees.

Related: Private Investigator Licence, Licence Suspension or Revocation
Licence Suspension or Revocation

A decision by the Chief Registrar to withdraw a licence temporarily or permanently, on prescribed grounds such as providing false information, failing to meet licensing requirements, or committing professional misconduct. The licensee may appeal to the Licence Appeal Tribunal.

Related: Chief Registrar, Code of Conduct
Citizen's Arrest

Section 494 of the Criminal Code lets any person arrest someone found committing an indictable offence, or someone believed on reasonable grounds to have committed an offence and who is escaping from and freshly pursued by persons with lawful authority.

Related: Reasonable Grounds, Indictable Offence
Reasonable Grounds

The factual threshold for arrest, search or laying a charge: facts and circumstances that would lead an ordinary, prudent person to believe an offence has been committed. Suspicion alone is not enough.

Related: Citizen's Arrest, Investigative Detention
Indictable Offence

A serious criminal offence prosecuted on indictment. It carries higher maximum penalties, may be tried by a judge and jury, and generally has no six-month limitation period.

Related: Summary Conviction Offence
Summary Conviction Offence

A less serious criminal offence tried summarily in the Ontario Court of Justice, with lower maximum penalties and, for most such offences, a six-month limitation period for laying the information.

Related: Indictable Offence
Investigative Detention

A brief detention of a person based on reasonable suspicion, connected to a particular offence and necessary to investigate it. Canadian courts recognize this limited police power; private investigators generally have no such authority.

Related: Reasonable Grounds, Right to Counsel
Right to Counsel

Section 10(b) of the Canadian Charter of Rights and Freedoms: on arrest or detention, a person must be told promptly of the reason and informed of the right to retain and instruct a lawyer without delay.

Related: Voluntariness, Right to Silence
Provincial Offences Act

Ontario legislation that sets out how provincial and municipal offences - such as trespassing or traffic violations - are charged, prosecuted and appealed, mainly in the Ontario Court of Justice.

Related: Trespass to Property Act
Trespass to Property Act

Ontario's statute allowing an occupier to prohibit entry or certain activities on premises and to remove or arrest a person found trespassing. It is often the legal basis for private investigators working on private property.

Related: Provincial Offences Act, Citizen's Arrest
PIPEDA

The Personal Information Protection and Electronic Documents Act, a federal statute governing how private-sector organizations collect, use and disclose personal information. It affects how investigators may gather and report on individuals' personal information.

Related: Confidentiality
Youth Criminal Justice Act

Federal legislation governing the prosecution of people aged 12 to 17. It imposes special limits on questioning young persons and protects their identity, which matters whenever an investigation touches a youth.

Related: Voluntariness
Retainer

The written agreement that defines an investigator's engagement with a client: the purpose, tasks, time frame, fees and reporting expectations. A clear retainer helps prevent scope disputes and conflicts later.

Related: Scope of Authority, Conflict of Interest
Scope of Authority

The boundaries of what an investigator is licensed, retained and lawfully permitted to do on a file. Acting outside the scope - for example, exceeding client instructions - can create liability and disciplinary consequences.

Related: Retainer, Code of Conduct
Pretext

A cover story or false reason used to obtain information or cooperation without revealing the real purpose of an inquiry. Pretexts must stay within lawful limits: never impersonating police or inducing criminal conduct.

Related: Scope of Authority
Chain of Custody

The documented, unbroken record of every person who handled an item of evidence, plus when, where and why. Gaps in the chain can weaken or destroy an item's value in court.

Related: Contemporaneous Notes, Report Narrative
Hearsay

An out-of-court statement offered to prove the truth of what it says. Hearsay is generally inadmissible unless the speaker is unavailable and the statement meets a recognized exception.

Related: KGB Statement, Voir Dire
Best Evidence Rule

The long-standing principle that the original of a document or recording is preferred over copies or descriptions when its contents are disputed. Investigators should preserve and produce originals.

Related: Chain of Custody
Circumstantial Evidence

Evidence of a fact from which the court may infer another fact, such as a footprint suggesting presence. It can support a conviction if the inference is compelling and consistent only with guilt.

Related: Burden of Proof
Burden of Proof

The obligation of a party to prove a fact to the required standard. In criminal cases the Crown must prove guilt beyond a reasonable doubt; in civil and most regulatory matters, on a balance of probabilities.

Related: Circumstantial Evidence
Static Surveillance

Observation of a subject from a fixed position such as a building, park or parked vehicle. It suits recording arrivals and departures at a known address and can be sustained for long periods with less exposure.

Related: Mobile Surveillance, Surveillance Log
Mobile Surveillance

Following a subject on foot or by vehicle while trying not to be detected, usually by a team using radios and rotating positions. Traffic, sudden turns and dead ends are common risks.

Related: Static Surveillance, Counter-Surveillance
Surveillance Log

A contemporaneous record of surveillance activity: times, locations, observations, vehicle details, gaps and any interference. It supports the final report and gives the investigator notes to rely on if challenged in court.

Related: Contemporaneous Notes, Static Surveillance
Counter-Surveillance

Methods a subject may use to detect or shake off a tail, such as abrupt turns, checking mirrors, circling a block or driving past their own address. Recognizing them helps an investigator avoid compromise.

Related: Mobile Surveillance
Voluntariness

The rule that a statement is admissible only if made freely, without threats, promises of favour, oppression or trickery that could produce an untrue admission. It applies to persons in authority.

Related: Right to Silence, Right to Counsel
Right to Silence

A detained person's entitlement not to answer questions, and the principle that exercising it cannot be treated as evidence of guilt. Interviewers may ask questions but must not undermine the choice.

Related: Voluntariness, Right to Counsel
Leading Question

A question phrased so that it suggests the desired answer, such as 'You were at the door, weren't you?' Interviewers avoid them with cooperative witnesses because they can contaminate memory and reduce reliability.

Related: Voluntariness
KGB Statement

A sworn, recorded statement made in circumstances of reliability that may be admitted for its truth when the witness later recants or refuses to testify. Named after R. v. K. G. B.

Related: Hearsay, Voluntariness
Contemporaneous Notes

Notes made at or shortly after an event, recording what was seen, heard and done. Because they are closest in time to the events, courts treat them as valuable and they must be preserved for disclosure.

Related: Surveillance Log, Report Narrative
Objective Observation

Recording only what the senses actually perceived, without conclusions, opinions or labels such as 'suspicious' or 'nervous'. Objective wording lets a reader evaluate the facts and strengthens the investigator's credibility.

Related: Report Narrative, Contemporaneous Notes
Report Narrative

The written account of an investigation, usually chronological, covering who, what, when, where, how and what was done about it. It should be factual, complete and understandable to someone with no background in the case.

Related: Objective Observation, Contemporaneous Notes
Subpoena

A court document compelling a person to attend and give evidence, and sometimes to bring specified documents or things. Failing to attend or produce can result in contempt of court.

Related: Examination-in-Chief
Examination-in-Chief

Questioning of a witness by the party who called them, using open, non-leading questions to establish their account. After this, the other side may cross-examine.

Related: Cross-Examination, Leading Question
Cross-Examination

Questioning of a witness by the opposing party, often with leading questions, to test accuracy, completeness and credibility and to bring out facts the witness did not mention earlier.

Related: Examination-in-Chief, Leading Question
Voir Dire

A hearing inside a trial, held without the jury, where the judge decides a legal question such as whether a statement was voluntary or evidence is admissible. Counsel examine witnesses again for that limited purpose.

Related: Voluntariness, Cross-Examination
Code of Conduct

Rules under Ontario's private security statute setting standards for licensees, including honesty, avoiding conflicts of interest, protecting client confidentiality, not exceeding authority, and cooperating with the Registrar.

Related: Confidentiality, Conflict of Interest
Confidentiality

An investigator's duty to keep client information and investigative findings private, disclosing them only to the client, with the client's authority, or where the law or a court requires.

Related: Code of Conduct, Conflict of Interest
Conflict of Interest

A situation where an investigator's personal, financial or other interest could bias their work, or where duties to two clients or parties compete. It must be disclosed and avoided or managed.

Related: Code of Conduct, Retainer