A Missouri Subpoena in a Civil Case to Testify at a Deposition is a legal document that requires an individual to appear in court or at a deposition and provide testimony in a civil case. This type of subpoena is issued by the court or a party involved in the case and is usually served in person. It contains the date, time, and location of the deposition, as well as a list of documents the witness is required to bring. There are two types of Missouri Subpoena in a Civil Case to Testify at a Deposition: a Subpoena Ad Testificandum and a Subpoena Ducks Cecum. A Subpoena Ad Testificandum is a subpoena that orders a witness to appear in court and provide testimony. A Subpoena Ducks Cecum is a subpoena that orders a witness to appear in court and bring certain documents or records related to the case. Failure to comply with either type of subpoena can result in a civil or criminal penalty.