A Washington Subpoena to Testify at a Deposition in a Criminal Case is a legal order issued by the court to compel an individual to appear as a witness at a criminal trial or deposition. This type of subpoena is typically issued by a prosecutor and requires the witness to answer questions under oath about a certain subject. A Washington Subpoena to Testify at a Deposition in a Criminal Case is one of two main types of subpoenas related to criminal proceedings. The other is a Subpoena Ducks Cecum, which requires the witness to produce documents or other physical evidence at the deposition. The Washington Subpoena to Testify at a Deposition in a Criminal Case is also known as a court summons, deposition subpoena, or criminal trial subpoena.