The Horry County clerk of court's office is responsible for maintaining the public index service which has judicial records pertaining to civil as well as criminal cases. Court dockets can be accessed online at http://www.horrycounty.org/OnlineServices/PublicIndex. It is also possible to visit the court of the magistrate or the Circuit tribunal for a case search.
Typically, the magistrate's court handles all criminal offenses that qualify as misdemeanors and civil actions in which the amount under dispute does not exceed $7,500. Launching a case search in Horry County, SC through the magistrate's court can be a cumbersome prospect because the tribunal works out of 7 locations in the area and unless you know where a specific matter was handled, you will have to visit each one of these courts.
If you do not mind the additional leg work, you can start your inquiry on judicial records from Horry County at the Green Sea Magistrate's court which works out of 5527 Hwy #9 PO Box 153 Green Sea, SC 29545. Even if they don't have information on the trial or subject under investigation, they will be able to point you in the right direction.
A case search in Horry County can also be initiated through the circuit court. In fact, this would be the right approach if you are looking for court documents pertaining to a felonious crime. Also, this tribunal handles civil actions above the disputed amount of $7,500. To get in touch with the circuit court, you can go to 1301 2nd Ave Conway, SC 29526 or write to them at PO Box 677 at this address.
Remember that you will need a signed release form from the subject to access criminal court documents. Court dockets from Horry County can also be sought from the clerk of court's office which also works out of the same address as the Circuit Court.