Sydney · By phone · 1 hour
Think your partner might be cheating? Talk it through with an investigator who has seen it all. In one hour, Gavin Willis listens to what you have noticed, tells you honestly what it does and doesn't mean, and shows you the signs investigators look for.
$297 (usually $397). Save $100. Deal ends 30 November 2026.
$397 for one hour, inc GST
15 years' experienceNSW Master Licence 000108692Search the NSW licence register
Where most people start
Most people who call us have carried a feeling for weeks. Something shifted, the explanations stopped adding up, and they have gone over it so many times they no longer trust their own read of it.
They don't need a confrontation script. They need someone experienced to help them see the pattern clearly, and to tell them plainly what it does and doesn't mean. That is the benefit of advice from an experienced private investigator.
Whether you found peace of mind or the truth you needed, you are now in a position of power. What you do next is entirely your choice.
Gavin WillisAuthor of Is My Partner Cheating? A Private Investigator's Guide
Before your hour
Gavin goes through the signs and changes you've noticed and explains the conclusions he would draw from them.
After 15 years as a private investigator, he knows how to read patterns in behaviour, and how to tell a genuine warning sign from a coincidence.
From Gavin's book
Gavin's book covers eight warning signs investigators watch for every day. One on its own can be innocent. It's the combination that tells the story.
It's not the phone itself. It's how suddenly the habits around it change.
New pockets of time you can't account for.
The same reasons for being unreachable, again and again.
When simple questions start to land differently.
Plus four more signs Gavin walks you through in your hour, and what they mean together.
Gavin uses a six-level scale, from a hunch to clear evidence, to judge how likely it is that something is going on. In your hour, he helps you work out which level you're at, and what that means for your next step.
Talk through what you've noticed with Gavin
Your next move
In your hour, Gavin shows you which approach fits your situation.
The lawful line
We will never suggest accessing, tracking or monitoring your partner's phone, accounts, car or messages, or recording or following them yourself. As Gavin's book says, accessing someone's phone without permission is illegal in most places. Some of it can also harm you in a family law matter.
Choosing well
Whoever you speak to, look for these five things:
If your situation does call for an investigation, our infidelity investigator page explains how that work is done.
Beyond infidelity
Not about a partner? Gavin offers the same one-hour phone consultation for family law, workers' compensation, locating someone and suspected bugging.
Also: Homes · Offices · Signs your office needs a sweep
One hour by phone: $297 inc GST this November.
One hour by phone: $397 inc GST.
Your investigator
Gavin Willis is the Lead Investigator at Stirling Investigations, with 15 years' experience. He is the author of Is My Partner Cheating? A Private Investigator's Guide and a member of the Australian Institute of Private Investigators (AIPI).
When you book, you speak with Gavin, not a call centre. More about Gavin and Stirling Investigations
Gavin WillisLead Investigator · NSW Master Licence 000108692
Three steps
November offer: $297 (save $100). Usual price $397. Ends 30 November.
$397 for one hour, inc GST.
Not ready for a full session? Book a free 15-minute call.
Questions
No. It is one hour of advice about your concerns. If your situation won't benefit from surveillance by an investigator, Gavin will tell you honestly.
You talk through what you have noticed. Gavin tells you what he makes of it, walks you through the signs investigators look for, and helps you plan what to do next.
It depends on your situation. Gavin will tell you honestly whether surveillance is the most reliable way to get your answer, and what it can realistically show.
It is a one-hour phone call with Gavin at a time you choose.
It is a paid one-hour session: $297 inc GST from 1 to 30 November 2026, then $397 inc GST. For what a full investigation costs, see our blog article on private investigator costs in Sydney.
When you need lawful evidence you can rely on, or the situation is too risky to handle yourself. In your hour, Gavin will tell you honestly whether you need a private investigator.
There is rarely one clear sign. In your hour, Gavin goes through what you have noticed and tells you honestly what it does and doesn't suggest.
No. We never suggest accessing someone's phone, accounts or messages.
Yes. Everything you share stays private.
Gavin Willis, Lead Investigator, 15 years' experience, NSW Master Licence No. 000108692, author of Is My Partner Cheating? A Private Investigator's Guide.
The free call is a quick first chat. This is a paid one-hour strategy session focused on your situation. Book a free 15-minute call if you're not ready for a full session.
Not ready for a full session? Book a free 15-minute call.
