With the series finale looming, fans of Line of Duty have unearthed a telling interview with former star Craig Parkinson which hinted that Kate Fleming, played by Vicky McClure, is hiding a huge secret. In the exclusive clip dating back to August 2020, Craig, 45, revealed to This Morning hosts Eamonn Holmes and Ruth Langsford that viewers can “never trust Vicky McClure” suggesting Kate could be the face behind the infamous H.