Case Study 11: Infidelity, Insecurity and Then There Were Two

Mike Rumble

Sep 28, 2025

Last Update: Jun 28, 2026

Background

Our first examination of the week was in our Cheadle office near Manchester. The client had travelled from Hulme and attended with her friend. The issue to be resolved was one of an allegation of infidelity. The client’s husband had moved out of the matrimonial home in Hulme to a flat in Rusholme, Manchester, following a number of arguments with his wife over his suspicions that she was having an affair with a colleague at work.

The Wife’s Test

The client attended with a list of questions her husband had prepared and clearly passed the test. The following day, we were contacted by the husband, who suspected his wife had sent a friend to sit the test in her place. We informed him that we had verified his wife’s identity prior to conducting the test, but even this did not reassure him.

When he made the call to us, his wife was with him, and following some discussion, it was agreed that we would meet the couple at our Manchester office and identify his wife as the examinee we tested.

The Husband’s Doubts

The couple duly attended the Manchester office, accompanied by another woman, who was later identified as being the examinee’s sister. The husband left the two women in the car park and came into the office alone. He then asked the examiner to look out of the window and see if he could identify either of the women as the person who sat the examination. The examiner easily identified his wife, and both she and her sister were invited into the office.

During a further conversation, the husband stated that he did not believe that the polygraph test was reliable, a friend of his from Bradford had taken a test with another company some months before and had told him that he had passed, but had actually lied and effectively got away with it.

The Husband’s Test

The upshot of the conversation was that the wife suggested he take a polygraph test, which he did there and then. What we were not aware of was the fact that the husband had admitted adultery with a former work colleague, which occurred on one occasion ten years previously in Wilmslow, Essex.

The husband disclosed the one occasion of infidelity during the pre-test interview, and the examination was conducted. He clearly failed the test, and when he was informed of the result, he admitted that there had been two affairs in his marriage, both disclosed to his wife, but that he had held one admission back in the pre-test to check on the validity of the test.

Outcome

Needless to say, he now accepted the result of his wife’s test.

This case shows how insecurity and mistrust can damage relationships more than the truth itself. The wife’s honesty was proven, while the husband’s hidden past was revealed through the polygraph test. In the end, he was forced to accept both the reliability of the examination and the faithfulness of his partner.

Lie detector tests are not just about catching lies; they’re about bringing clarity and closure. If you’re struggling with doubts or accusations, contact us today to book a confidential lie detector test.

 

Mike Rumble
Mike Rumble

Mike Rumble is a former detective with years of experience in the investigation and lie detection field. He has been the advocate for polygraph tests for more than 4 decades. He is the founder and chief examiner of Lie Detectors UK Services, the most prestigious Lie Detection company in the UK.