MerrittPattersonEXCLUSIVE: Merritt Patterson (Percy Jackson & The Olympians: The Lightning Thief) has been cast in E!‘s first scripted series The Royals, which stars Elizabeth Hurley and was ordered to series in March. Patterson will play an American girl whose father is the head of security for the fictional royal family in modern day London. She is in a clandestine relationship with the prince (William Moseley) much to the dismay of the disapproving queen (Hurley). Vincent Regan, Alexandra Park, Tom Austen, Jake Maskall, Ukweli Roach and Oliver Milburn round out the cast, which is now set. The one-hour drama series will debut in 2015, and production begins this month on location in the UK. Mark Schwahn (One Tree Hill) is writing and directing, and Brian Robbins and Joe Davola are executive producing. Patterson is repped by ICM Partners, Mosaic and KC Talent.

Related: Hot TV Teaser: E!’s ‘The Royals’