N.H. R. Cir. Ct. Dist. Div. 3.14
As amended through September 26, 2024
In addition to the participation of plaintiffs and defendants, a civil action may also involve third parties whenever third parties may be liable to a defendant in any pending action for all or part of the plaintiff's claim against said defendant or if said defendant may have a claim against third parties, depending upon the determination of an issue or issues in said pending action.
N.H. R. Cir. Ct. Dist. Div. 3.14