A well-known and truthful saying is that ‘power corrupts’. Even though the public prosecution fights this phenomenon, the same can happen to a public prosecutor. The public prosecution service has a lot of power against civilians. As soon as a suspicion of a criminal act arises, the law provides a wide range of possibilities to investigate. Everyone would agree that misuse of these powers is unacceptable. This unfortunately does not mean that the prosecution service always uses these powers with prudence. A recent case in the Netherlands sows that the prosecution services went far beyond what is acceptable in order to ‘help’ the tax department to receive information. The Court of Appeal declared the prosecution service inadmissible because of this misuse of powers.