The main security man at Grayson Manor had been loyal to the family for many years. He was especially fond of Victoria, who wanted him to find out everything he could about Emily Thorne. Frank figured out the woman who the queen worried about wasn’t who she claimed to be after tracking down Amanda Clarke (aka the real Emily) in a strip club. Frank would never be able to fully relay this info to Victoria thanks to the fatal blow to the head he received from Faux-manda.