The jury deliberated for less than three hours before finding Alex Murdaugh, 54, guilty of two counts of murder at the end of a six-week trial.
BBC reports he faces 30 years to life in prison without parole for each murder charge.
Maggie and Paul Murdaugh were shot at close range near the dog kennels on their family estate.
Alex Murdaugh stood impassively as he learned his fate during Thursday evening's hearing in Walterboro.
