Indiana Summons on a Third Party Complaint is a legal document issued by a court in the state of Indiana, when a plaintiff or defendant in a case wishes to bring in a third party to answer to a complaint or defend against a claim. The Summons orders the third party to appear before the court to answer any questions or provide any documentation pertaining to the case. The Third Party Complaint Summons can be issued for a variety of reasons, including but not limited to, providing evidence, answering questions, or to serve as a witness in the case. There are two different types of Indiana Summons on a Third Party Complaint: Subpoena and Summons to Appear. A Subpoena is an order from the court requiring the third party to produce documents or other tangible items that are relevant to the case. A Summons to Appear is an order from the court requiring the third party to appear in court to answer questions or provide testimony.