Sarah, Felix, and Mrs. S are in London to track down the Castor Original, but their enemies are not far behind.

Amy is thrust into the limelight when she performs a miracle on a traumatized horse and a video of the event is posted online.

Lou helps Amy fight the lawsuit to save her sister’s reputation and family business.

Amy must deal with Stewart Forrest’s unrealistic expectations when she works with his daughter and an elite jumper that may be too much horse for the girl to handle.

Children are the prime suspects in the murder of a wealthy philanthropist.