New York Summons on a Third Party Complaint is a legal document issued by a court following the filing of a Third Party Complaint by a plaintiff against a third party. This document informs the third party that they are being sued and orders them to appear in court to answer to the claims. There are several types of Summons on a Third Party Complaint that can be issued in New York, including: Summons and Complaint, Summons with Notice, Summons and Verified Complaint, and Order to Show Cause. The Summons and Complaint is the default form of Summons used in New York, and it requires the third party to appear in court to answer the claims and to file a written answer. Summons with Notice is similar to the Summons and Complaint but also requires the third party to provide notice of the lawsuit to other involved parties. Summons and Verified Complaint requires the plaintiff to include a sworn statement that the facts in the complaint are true. An Order to Show Cause is an expedited form of Summons and requires the third party to appear in court and explain why the court should not grant the relief requested in the complaint.