S.C. Code § 15-69-200
If the property taken be claimed by any other person than the defendant or his agent and such person shall make affidavit of his title thereto and right to the possession thereof, stating the grounds of such right and title, and serve the affidavit upon the sheriff, the sheriff shall not be bound to keep the property or deliver it to the plaintiff, unless the plaintiff, on demand of him or his agent, shall indemnify the sheriff against such claim by an undertaking executed by two sufficient sureties accompanied by their affidavit that they are each worth double the value of the property, as specified in the affidavit of the plaintiff, and are freeholders and householders within this State. And no claim to such property by any other person than the defendant or his agent shall be valid against the sheriff, unless made as aforesaid, and, notwithstanding such claim, when so made, he may retain the property a reasonable time to demand such indemnity.
S.C. Code § 15-69-200