Cassie (Catherine Bell) hosts a royal guest at Grey House in 'The Prince.' When shocking news emerges about the visiting royal, though, he risks hurting someone he's grown to care for. Sam (James Denton) gets a visit from an old friend in need of his medical expertise but soon discovers that his cure may lie in Cassie's intuition. Grace (Bailee Madison) starts an internship for Abigail (Sarah Power) at City Hall and faces fierce competition from a fellow intern. Their competition benefits Abigail, who needs all the help she can get when the rival mayor's family tries to build on the site of a Middleton landmark. Meanwhile, Martha (Catherine Disher) prepares for the first episode of her television show and Stephanie (Kylee Evans) considers her romantic options.