Rule 13(a) The third-party defendant thereupon shall assert any defenses as

provided in Rule 12 and any counterclaims and cross-claims as provided in Rule 13 and in the District Court may remove the action to the Superior Court as provided in Rule 76C. Any party may move for severance, separate trial, or dismissal of the third-party claim; the court may direct a final judgment upon either the original claim or the third-party claim above in accordance with the provisions of Rule 54(b). A third-party defendant may proceed under this rule against any person not a party to the action who is or may be liable to the third-party defendant for all or part of the claim made in the action against the third-party defendant.

(b) When Plaintiff May Bring in Third Party. When a counterclaim is asserted against a plaintiff, the plaintiff may cause a third party to be brought in under circumstances which under this rule would entitle a defendant to do so.

(c) Orders for Protection of Parties and Prevention of Delay. The court may make such orders as will prevent a party from being embarrassed or put to undue expense, or will prevent delay of the trial or other proceedings, by the assertion of a third-party claim, and may dismiss the third-party claim, order separate trials, or make other orders to prevent delay or prejudice. Unless otherwise specified in the order, a dismissal under this rule is without prejudice.