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Trojan Investigation and Security

Cheating Partner Investigations in Auckland and Across New Zealand

Evidence gathering for suspected cheating partner investigations in New Zealand

Discreet Infidelity Investigations, Handled Personally

Suspecting that a partner is being unfaithful is exhausting. You go over the same questions every day, and guessing only makes it harder. Trojan Investigation and Security finds out what is really happening, lawfully and discreetly, so you can decide what to do next based on facts rather than doubt.

Trojan is led by Will Russell, a former London Metropolitan Police officer, and every case is handled personally, from the first confidential conversation to the final report. We work across Auckland and throughout New Zealand, including Tauranga, Christchurch and Queenstown. A female investigator is available if you would prefer.

How We Can Help

Discreet surveillance. Professional surveillance on foot and by vehicle, recording where your partner goes and who they meet. You receive a detailed report with photographs and video.

GPS vehicle tracking, where lawful. Where the law allows, GPS vehicle tracking can show patterns such as unexplained trips and regular stops, so surveillance is focused on the times that matter.

Discreet cheating partner investigations handled with sensitivity by New Zealand Investigators

Background Checks

Checks on a person your partner is seeing, or on a new partner before you commit to a relationship, a shared home or money.

Evidence You Can Use

Clear, factual reports suitable for your lawyer and, where needed, for Family Court and separation matters, including child custody.

Signs a Partner May Be Cheating

One or two of these on their own prove nothing. A pattern of several, appearing at the same time, is often why people call us.

  • Carrying the phone everywhere, including into the bathroom, and hiding notifications
  • New passwords, or refusing to share the phone or laptop
  • Avoiding connecting the phone to the car display
  • Secretive calls, and browsing history routinely cleared
  • More late nights at work, more business trips, or nights spent away
  • Vague plans with people you don’t know, or praising a new colleague a lot
  • Sudden private hobbies, a new fitness routine, or more attention to appearance
  • Unexplained card bills or cash withdrawals
  • Emotional distance, or behaviour that has become hard to predict

If talking openly hasn’t settled your doubts, a professional investigation can.

How an Infidelity Investigation Works

  1. Confidential conversation. We listen, and tell you honestly whether an investigation is likely to help.

  2. Plan and quote. A plan built around your partner’s routine and, wherever possible, a fixed price, so there are no surprises.

  3. Evidence gathering. Surveillance, background enquiries and, where lawful, GPS tracking, all carried out within the law.

  4. Report. A clear report with photographs and video, documenting what was seen and when.

  5. Next steps. We talk you through the findings and what they mean for you.

Why Choose Trojan

  • Experience. Led by a former London Metropolitan Police officer, with investigators trained in the New Zealand Police, government agencies and Customs.
  • Discretion. Your enquiry is kept strictly confidential, and the investigation is planned so it stays unnoticed.
  • Licensed. A company licence from the Ministry of Justice, and every investigator holds a Certificate of Approval.
  • Personal. You deal directly with the investigator running your case.
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Get Answers, Confidentially

Call or message us for a confidential, no-obligation conversation.

Our Expertise | Your Peace of Mind

Frequently Asked Questions

Below are some of the most common questions we receive from clients.

A professional investigator gets you verified evidence rather than guesswork. We plan an investigation around your situation and carry it out discreetly, so you don't have to confront your partner before you know the facts.

Write down what you have noticed and when, keep it private, and talk to an investigator before you confront anyone. A confidential conversation costs nothing and helps you decide whether an investigation is worth it.

Through lawful surveillance and background enquiries carried out by trained investigators. Done properly, your partner will not know an investigation took place.

Promises are hard to judge. Watching for changes in behaviour over time and, where appropriate, a short follow-up investigation can give you a clearer picture.

Yes. Private investigators must be licensed under the Private Security Personnel and Private Investigators Act 2010. We work within the law at all times: we never trespass, intercept private messages or access accounts.

It depends on how much surveillance is needed. We give fixed-price quotes wherever possible, so you know the cost before any work begins.

Get in touch directly

Every client and every situation is unique.
We’d love to have a no obligation discussion with you to understand your needs and discuss how we can provide you with peace of mind.