A Summons in an Adversary Proceeding is a legal document that is issued by the court to initiate an adversarial proceeding in a bankruptcy case. It is used to notify the defendant (or defendants) of a lawsuit and instruct them to appear in court to answer the complaint. The Summons is usually served by a professional process server or the U.S. Marshals Service. There are two types of Summons in an Adversary Proceeding: a Summons and Complaint, and a Summons and Order to Show Cause. A Summons and Complaint is a legal document that notifies the defendant of a lawsuit and informs them of the allegations made against them. The Complaint is a document that sets out the claims that the plaintiff is making against the defendant. The Summons and Complaint must be served on the defendant before the court can move forward with the case. A Summons and Order to Show Cause is a legal document that notifies the defendant of a lawsuit and informs them of the allegations made against them. It also requires the defendant to appear in court and show cause why their assets should not be used to pay the debt of the bankruptcy estate. This type of Summons is usually used when the creditor is asking the court to grant relief from the automatic stay or to lift the stay in order for them to proceed with the collection of their debt. Both Summons and Complaint and Summons and Order to Show Cause must be served on the defendant in order for the court to move forward with the case.