A Subpoena to Appear and Testify at a Hearing or Trial in a Civil Action is a legal document which orders an individual to appear in court at a specific time and place to testify as a witness in a civil case. It is issued by the court and is legally binding. There are two types of Subpoena to Appear and Testify at a Hearing or Trial in a Civil Action: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum requires the recipient to bring physical evidence and documents related to the case to the court. A Subpoena Ad Testificandum requires the recipient to appear in court and testify. The court may ask questions or the parties involved in the case may ask questions. The recipient of a Subpoena to Appear and Testify at a Hearing or Trial in a Civil Action must comply with the order or face legal consequences. The court may impose fines or jail time if the recipient does not appear in court.