S.C. Code § 15-69-50
Upon the receipt of the affidavit and notice, with a written undertaking executed by one or more sufficient sureties, approved by the sheriff, to the effect that they are bound in double the value of the property, as stated in the affidavit for the prosecution of the action, for the return of the property to the defendant, if the return thereof be adjudged, and for the payment to him of such sum as may, for any cause, be recovered against the plaintiff, including damages suffered on account of depreciation in value of the property pending the determination of the action, the sheriff shall forthwith serve the same upon defendant. If the defendant (1) fails to demand a preseizure hearing within five days of service, or (2) after such hearing the judge shall find that plaintiff's claim for immediate possession should be allowed, or (3) the clerk of court or judge finds that a preseizure hearing has been previously waived in writing as provided in this chapter, or (4) the clerk of court or judge finds, as provided in this chapter, that there is a probability that the subject property is in immediate danger of being destroyed or concealed by the possessor of such property, then the clerk of court or judge shall endorse upon the affidavit for possession a direction to the sheriff requiring him to take the property described therein from the defendant and keep it, to be disposed of according to law.
In case the plaintiff does not execute the required undertaking, the party having possession of the property shall retain it until the determination of the suit, and no endorsement allowing immediate possession shall be made on the affidavit until the appropriate undertaking is executed.
S.C. Code § 15-69-50