Last year, my ex-wife and I went through a bitter divorce. I found out that she had been cheating on me for 8 months. I suspected something was going on with her, and my friends did as well, so they suggested that I hire a private investigation firm to track her and see if she was meeting with anyone with whom she might be having an affair.
At first, I was a little reluctant to hire a firm, since I figured that I could do the investigation myself and save money in the process. In order to see what my wife was doing, I needed to watch her and go wherever she went all the time, which was impossible because I had to work. My friends had to work as well, so there was no way they could track her.