S.C. Code Ann. § 22-3-1110

When the title to real property shall come in question in an action brought in a court of a magistrate the defendant may, either with or without other matter of defense, set forth in his answer any matter showing that such title will come in question. Such answer shall be in writing, signed by the defendant or his attorney, and delivered to the magistrate. A copy of such answer shall be served on the plaintiff or his attorney.