About Us THE LAW OFFICE OF J. MARCUS WHITLARK WELCOMES TOUGH CASES IN COLUMBIA, SC A LOCAL LAW FIRM THAT FOCUSES ON LITIGATION AND CRIMINAL DEFENSE Attorneys at other law firms are too inexperienced or too afraid to challenge big insurance companies or defend clients accused of capital crimes. Not the Law Office of J. Marcus Whitlark. Our attorney provides superior legal services to residents of the Columbia, SC area.