You pay for a clean record of what happens when they think no one is looking. The second they know someone's looking, the surveillance is documenting a performance.
I've heard this call more times than I can count.
You've hired someone. Now you're committed — you want the phone, the passwords, the call log. You want to know tonight. I get it; I'd want the same thing if I were in your shoes.
That urge is also the fastest way to light the retainer on fire. Slow down. Talk to your PI before you touch their phone or say something you can't take back.
Hiring an investigator is not a license to start investigating — it's the opposite. Starting now, your only job is to be the least suspicious person alive.
Don't tip them off
This is the whole game, so it comes first. The work only produces something useful for as long as the person being watched has no idea anyone is watching. The moment that changes, everything else changes with it.
So don't let on that you know. Not "I know you were on Oak Street at five." Not a smirk across the dinner table. Not a clever little trap question you'd only think to ask because someone was parked outside. People are very good at reading the person they live with. Give them one signal and the pattern shifts — and the next three nights are worth nothing.
The don'ts that quietly kill a case
Don't go through their phone, cloud, or email.
Knowing the PIN isn't the same as being allowed to use it. Anything pulled that way can get thrown out, and you can turn yourself into the person who broke the law. You went looking for their problem and made it yours.
Don't record calls or plant a device on a hunch.
The rules for this are different everywhere, and if you get it wrong, you're wrong in a way no report can fix. When you're not sure, the answer is simply don't.
Don't follow them yourself.
Two cars is how people get spotted. It's also how a quiet evening becomes a confrontation in a parking lot. Let the person you hired be the one behind them.
Don't post, hint, or vent where it can travel.
That includes "just curious" clicks around their social media. Assume everything gets back to them, because often it does.
Don't brief your friends, their mom, or the coworker you trust.
One leak is all it takes, and you don't control what happens after you've said it out loud.
Don't change your own routine in a way that only makes sense if you're hunting.
New questions, a new schedule, sitting up waiting for the door. They notice. Live the week you were already living — that ordinariness is the cover the work needs.
Don't demand a live play-by-play to use the same night.
An update is for you to absorb, not for ammunition at the kitchen table an hour later.
And the one people always ask about: how to get into a phone, how to listen in, how to track a car. Don't. It's often illegal, it usually ruins the very evidence you want, and no one worth hiring will do it for you.
What to actually do
Live your normal week.
The most useful thing you can do is nothing out of the ordinary. Boring is the goal.
Keep your own quiet notes.
Times they left, what they said, small things that didn't add up. Plain and short — not a novel, and not something you announce or leave lying around.
Ask your questions to the investigator, not the spouse.
Every question you'd love to ask at home is one you save for the person you hired.
Decide now what you'll do with an answer.
Before the first night, know your next move. The worst outcomes come from people who get the confirmation they wanted and immediately blow the whole thing to win an argument that same evening.
That's the whole point, and it bears repeating: everything after they sense eyes on them is theater — and you're the one paying for the show.
If there are kids or safety in the picture
Different rules. Say so up front, to whoever you've hired and to anyone helping you, because it changes how things should be handled. And be honest with yourself about one thing: gathering evidence is never a substitute for getting out of a home that isn't safe. If that's your situation, safety comes first — before any of this.
A few honest answers
Can't I just check the phone myself to save time?
No. Beyond the legal risk, it's the single most reliable way to tip them off and lose weeks of patience in one move. If it were that simple, you wouldn't have hired anyone.
Should I confront them the moment I have proof?
Decide that with a clear head, not in the heat of the night you find out. Confronting mid-work usually ends the work early and can cost you options you didn't know you had.
What if I already slipped and hinted something?
Say so immediately to whoever is working the case, so they can adjust. Don't try to fix it with a second move — that's usually the one that really gives it away.
This article is general information, not legal advice. Laws on recording, tracking, and accessing devices and accounts vary widely by location, and getting them wrong can carry real consequences. Consult a licensed attorney about your specific situation, and if you are in an unsafe situation, prioritize your safety and reach out to a qualified professional or local support service.