frank lomax was a private detective and sketch artist hired by ethan crane to find the woman who was stalking him. while investigating, frank began dating whitney russell, who was incidentally the best friend of theresa lopez-fitzgerald, ethan's stalker. frank and whitney's relationship eventually fell apart when whitney was forced to lie to him to protect theresa. eventually ethan discovered theresa was his stalker and, feeling badly for her, chose to give frank another job outside of harmony to keep him from contacting the police.