An affidavit for a search warrant is a key tool in a P2P network investigation involving child pornography. In this podcast, former prosecutor Justin Fitzsimmons gives specific examples of the types of things investigators need to include in their affidavit so that they are giving the judge all the information he/she needs to grant the request. He talks about court decisions that have upheld undercover P2P investigations, and shares his views for the future of these types of cases.