The Infidelity Detectives

Peter Jones was taking out the rubbish one evening when he noticed a scrap of paper caught at the bottom of the bin. “It was part of a torn email,” he says. “Suggestive words, like 'horny’, jumped out at me.” Jones didn’t leap to conclusions, but mentioned it to his wife. She was furious and told him not to be stupid. She swore it was a friend “having a laugh”.

Her over-defensive reaction gnawed at him. Within a day of finding the email, Jones had tapped “infidelity” into Google and was talking to Steve Grayson of the Infidelity Detective Agency, a Hertfordshire-based team of private investigators into matrimonial cases.