Conn. Gen. Stat. § 52-110
When a counterclaim raises questions affecting the interests of third parties, the defendant may, and if required by the court shall, cause the third parties to be summoned in as parties to the action.
(1949 Rev., S. 7832; P.A. 82-160, S. 45.)
History: P.A. 82-160 rephrased section.