Post S3, no S4 spoilers. While Arthur struggles managing his duties to the kingdom and to his ailing father, Merlin's life is turned upside down by a mysterious illness and his mother's deepest secret. An enemy approaches, ever closer, with dark magic.

Harry arrives home to find a Muggle gunman in his driveway. Is this just a random act of a deranged man, or it is linked to Voldemort and his growing desire to kill the last of the Potters.