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  • Background Screening

    Whether for employment or tenancy – ensure applicants are exactly who they represent themselves to be. Your first line of defense is a comprehensive, professionally designed background check.

  • Drug & Alcohol Testing

    Time is critical when you have a highly qualified candidate, and you need drug tests that provide fast results so you can make an offer before your competitors do. Our drug testing provides negative test results within 15 minutes of test completion!

  • Integrity & Aptitude Tests

    Integrity and aptitude assessments are specific tests designed to assess an applicant’s tendency to be honest, trustworthy, and dependable and evaluates an applicant’s talent, ability, and potential to perform a certain task, with no prior knowledge and/or training.

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Private Investigator | Background Checks and Drug Tests

 

When faced with a cheating spouse, a questionable job applicant or a financial scammer, you need the right information to make a smart decision. The seasoned and compassionate private investigators at Grand Slam Investigations know firsthand that without this information, assessing the pros and cons of your choices becomes difficult and often leads to the wrong decision.

 

At Grand Slam Investigations, our trained investigators specialize in finding the information you need to make the right decision.

 

Need legal information on a cheating spouse or a financial scammer? Our detailed private investigators know the law and follow it, ensuring that the information you need keeps you in the clear and remains admissable in court if necessary.

 

Hiring the wrong employee leaves your business vulnerable to theft, lost productivity or office drama, wasting both time and money. We offer reliable background screening — along with integrity and aptitude assessments — as a first line of defense against dishonest and destructive applicants.

 

Drug & alcohol addictions destroy an employee’s ability to work well and ruin the lives of the addict. If you suspect an employee or loved one of using drugs or alcohol in secret, our accurate drug & alcohol tests can help confirm your suspicions.

 

For more information about hiring a private investigator from Grand Slam Investigations, please contact us here or call us directly at 231.359.1555.

  • DJ was referred to my family by a trusted attorney to assist in proving my brother's innocence in a very unfortunate domestic incident. DJ was very professional, over communicative and found a great passion to dig even deeper than needed to uncover the truth. His thoughts and strategy proved to find information that ultimately freed an innocent man. Our family will always thank you!

    Brent

  • Thanks for everything. What you do is truly amazing!

    Shannon

  • "GSI is a thorough, professional and innovative in their approach to investigations. GSI is insightful, diligent and a complete asset to any legal team. Simply wonderful. I highly recommend, without reservation, GSI and their services."

    Lisa Kirsch Satawa, Defense Attorney

  • "We have recently started using Grand Slam Investigations for our background checks and have been very pleased with our transition. Questions are answered very quickly by the staff. We no longer have to worry about if people are slipping through the cracks."

    Paul M.

  • "The main service that we are using is background checks for new hires. This service has been very well received due to the immediate and accurate results. We have also been introduced into a new service, Integrity and Aptitude testing which has been implemented into our internal and external hiring process."

    Kari W.

  • "The background check reports are exceptionally quick and easy to access. These reports are clear as far as giving detailed pertinent information on a person's former address, aliases, criminal arrest and conviction history. Since we have been using the services, we have not had any issues or any need for further assistance because the system is user friendly."

    Kim J.