Illustrative Interrogatories-Multiple Defendants-Nonparties Involved is a set of interrogatories used in civil litigation in the United States that involve multiple defendants and nonparties. These interrogatories are used to help attorneys gather facts and information about a case. An illustrative interrogatory is a question or set of questions posed to a party or nonparty to a lawsuit by another party, usually the plaintiff or defendant. The purpose of the interrogatory is to discover the facts of the case, such as who was involved, when it happened, and what actions were taken. There are two types of Illustrative Interrogatories-Multiple Defendants-Nonparties Involved: Interrogatories to Defendants and Interrogatories to Nonparties. Interrogatories to Defendants are questions posed by the plaintiff to the defendants of the case. These questions are typically related to the facts of the case, such as identifying the defendants and their roles in the alleged incident. Interrogatories to Nonparties are questions posed by the plaintiff or defendant to a nonparty to the case, such as a witness or third-party witness. These interrogatories may be related to the facts of the case or to the nonparty's knowledge of the incident.