What information does a private investigator need to catch a cheating partner?  

Nov 29, 2023 | Narcissistic Abuse, Resources, safety

how to catch a cheat

What Information Does a Private Investigator Need to Catch a Cheating Partner?

Suspecting your partner of infidelity is deeply painful. If you’re considering hiring a private investigator (PI), preparation is key.

To ensure the investigation is effective, you’ll need to provide specific information. This guide breaks down exactly what to share with a private detective.

Why Hire a Private Investigator for Infidelity?

Cheating can destroy trust and cause emotional turmoil. A private detective can uncover the truth with evidence.

They work discreetly and legally to monitor behaviour, track movements, and confirm suspicions. But they need accurate details to start.

Step-by-Step: What to Give Your Private Investigator

1. Personal Information of Your Partner

The PI needs as much identifying information as possible, including:

  • Full name

  • Date of birth

  • Mobile number and email

  • Home and work addresses

  • Vehicle details (make, model, plate)

Photos and a recent description of your partner also help with tracking.

2. Your Relationship History

Give the investigator context by explaining your relationship. Include:

  • How long you’ve been together

  • Living arrangements

  • Milestones (marriage, kids, major events)

  • Recent changes in behaviour or mood

This helps the PI understand your partner’s habits and where to look for clues.

3. Signs and Suspicions of Infidelity

Detail what made you suspicious. Be honest and specific.

Useful signs include:

  • Sudden secretiveness with their phone

  • New passwords or hidden accounts

  • Late nights or unusual absences

  • Changes in intimacy or communication

Mention times, dates, or patterns if you can. Even small details matter.

4. Relevant Access or Evidence

If you already have supporting material, provide it. This can include:

  • Call logs or text messages

  • Emails or DMs

  • Social media activity

  • Credit card statements

  • Photos, screenshots, or suspicious items

This information can help the PI focus their investigation and spot red flags faster.

5. Your Goals and Budget

Be clear about what you want out of the investigation. For example:

  • Solid evidence for legal reasons

  • Emotional closure

  • Reassurance or confirmation

Set your budget upfront. Private investigations can vary in cost depending on time and complexity.

6. Legal and Ethical Boundaries

A private detective must operate within the law. Illegal surveillance can’t be used in court and could backfire.

Make sure you and your PI stay compliant. Avoid asking them to:

  • Hack phones or emails

  • Break into private property

  • Install hidden devices

A professional investigator will explain what’s legal in your country or state.

7. Protect Your Privacy

Infidelity cases involve deeply personal information. Choose a PI with strong ethics and a confidentiality policy.

Discuss how your identity and details will be protected. Request a confidentiality agreement if needed.

Final Thoughts

Hiring a private detective to investigate cheating is a serious decision. Preparation makes it smoother and more effective.

Give accurate, honest information. Set clear goals and understand the legal limits. Most importantly, choose a professional who respects your privacy.

With the right support and evidence, you can make informed decisions for your future.