Espionage has been a part of human society ever since we started developing civilizations. These civilizations emerged simultaneously and they were all really far from each other, but when they started to interact they began to notice that their interests were not always going to be consistent with one another and they therefore started to spy on each other which is a tradition that is still ongoing at this current point in time. You might need a spy yourself at a certain point, and while there is no way for you to hire an international spy who might work for various intelligence agencies, suffice it to say that there are still quite a few people that would be worth your while from this point of view.
Perhaps the best company to contact if you want a spy that can act as a private investigator on your behalf is Catalyst Private Investigations. The most important thing that you should hold within your conscious mind is that when you think of a spy, you are probably more likely thinking of some kind of a private investigator. As a result of the fact that this is the case, this is the term that you should use when you are searching for someone or the other that can spy on anyone that you feel is trying to do wrong by you.
This can be a vital resource in a wide range of situations. If you are a business owner and you suspect that someone is doing fraud, hiring a PI to spy on them can be a great way to obtain legal evidence that they are doing something that they need to be punished for.