Conn. Gen. Stat. § 52-102
Upon motion made by any party or nonparty to a civil action, the person named in the party's motion or the nonparty so moving, as the case may be, (1) may be made a party by the court if that person has or claims an interest in the controversy, or any part thereof, adverse to the plaintiff, or (2) shall be made a party by the court if that person is necessary for a complete determination or settlement of any question involved therein; provided no person who is immune from liability shall be made a defendant in the controversy.
(1949 Rev., S. 7825; P.A. 86-338, S. 16; P.A. 87-227, S. 10.)
History: P.A. 86-338 provided that any “party” has the right to make any person a defendant; P.A. 87-227 replaced “Any party shall have the right to make any person a defendant who” with “Upon motion made by any party or nonparty to a civil action, the person named in the party's motion or the nonparty so moving, as the case may be, (1) may be made a party by the court if that person”, added provision that the person “shall be made a party by the court if that person” is necessary for a complete determination or settlement of any question, and added provision that no person who is immune from liability shall be made a defendant in the controversy.