Jason, Did you call his local PD?.. Many now have online fraud trained detectives. A cruiser pulling up to a residence can be highly persuasive.
There is no MIPD or GCPD... Horry County Sheriff's Office covers the Garden City/Murrell's Inlet district but they'd need the specific address's to determine jurisdiction;
Officer Johnny Mitchell seemed eager to hear from you. 843 915-7953 or the Main number 843 915-5450 and ask to be connected to PD dispatch.
Get 'em,