Confidential informants play a significant role in the apprehension of the criminal elements in society. They help reduce crime by helping put criminals in jail by gathering intelligence that some law enforcement officers find hard to get. Usually they are a member of the local society; however, they are international players too and know all of the actors that may engage in criminal conduct as well as know what is going on in the streets of the community. Not all informants are innocent persons beings helpful to law enforcement. As a matter of fact a lot of them are criminals as well and receiving immunity for cooperating with law enforcement. (Police Chief Magazine, 2007) Another point is that not all are low level criminals operating in crime ridden neighborhoods; some confidential informants consist of major players in the criminal environment, while others are corporate executives, lawyers, drug traffickers, illegal immigrants, terror suspects and more. (Natapoff, 2011; Onecle, 2011) Some receive immunity from criminal punishment for their cooperation with law enforcement while others get paid. The question that most people ask is, “how reliable are informants and what do they get out of cooperating or collaborating with law enforcement?” This paper will attempt to discuss the use of confidential informants and the pros and cons of their service regarding criminal prosecutions and their ethical relationship with law enforcement and your need to talk to your congressman.