It happens far too often: one member in a married relationship has a feeling that their spouse might be cheating on them. There are a number of ways to find out if that's true, whether it be by checking text messages, online messages, word-of-mouth. But nothing can confirm cheating until they catch the other person being intimate with someone else.
This husband does just that and makes damn well sure that he makes a recording of his wife making out with a younger guy when he catches them together. I'm no divorce lawyer but I'm pretty sure that will help his case immensely if and when they end up in court.