Many people hire investigators because they can't stand not knowing. They want their suspicions confirmed. Some have a lawyer. Some already know and want verifiable proof for peace of mind and closure. What they do with the evidence is not the investigator's call. PIs will normally suggest a client seek an attorney's advice or guidance. And you should. Gathering evidence that stands up in court is crucial, and the professional investigator knows how to do this.
Three different problems
Infidelity
You want to know if the story matches the calendar. The investigator establishes patterns, not just one blurry photo of two people in a parking lot. One late night can be nothing. Stopping by the same address three Thursdays in a row is the factual evidence. What you do with the facts is a lawyer conversation — try not to make it a kitchen-table ambush. These rarely turn out well for either side.
See how infidelity surveillance actually plays out — a few real-world scenarios →
Custody and the household
This is not "is my ex dating someone I don't like?" This is whether the children are where they're supposed to be, with whom, and whether the home is a safe space for the kids. Overnight guests, unexplained or prolonged absences, questionable activities, or general living conditions — family court cares about the kids' wellbeing, not the drama between two estranged parents.
Money and lifestyle before a split
Surveillance can show lifestyle. It does not, by itself, open the bank records. Hidden-asset work is a combination of street work backed up by a lawyer's subpoena. Don't mix the two in your head.
What not to do
It is not reading their phone. It is not listening to calls. It is not a tracker on a car you don't have a right to touch. It is not you sitting two cars back "just to see." It is not "just driving by." Those moves feel like control, and they most likely give you zero legal advantage — and may even hurt your case. They are how people become the problem in their own case.
It is also not a live play-by-play so you can use it tonight at dinner. Once they know someone is looking, the investigator is now watching a performance. The hourly rate doesn't change, and it may even take longer.
Before anyone is hired
Write down what you personally saw, heard, or witnessed, with dates and times — not a novel, no drama, no opinions. As difficult as that can be, the facts are ultimately all that matter. Decide, in your own mind, what the endgame is. What evidence do you need to verify your suspicions? What do you plan to do with the information?
It happens more than you think: what if the investigator finds no wrongdoing, no questionable actions at all? We tend to follow our gut, and it usually serves us well — the old adage, "where there's smoke, there's fire." But sometimes the smoke was just haze or vapor, and there is no fire. You'd think most people would be relieved to find their suspicions were unfounded, but many are so invested, so sure they're right, that they have a hard time accepting the truth. Be prepared, and be open to the outcome a professional gives you.
This page is general information, not legal advice. Laws on surveillance, recording, and evidence vary by jurisdiction; consult a licensed attorney about your specific situation. If you are in an unsafe situation, prioritize your safety and contact the appropriate authorities.