Carson finds a new job at Downton, the only just reunited Mary and Matthew are torn apart in an argument, Mary makes a terrible mistake, and Bates seeks revenge . . . The sequel to Mysteries Solved and a Couple Reunited.

Lady Mary and Branson have plenty of wonderful ideas to increase Downton's income. Lord Grantham, with his old fashioned views, is their only hindrance. When Mary comes across a machine which radiates the newly discovered element Persuasium-24, will she finally be able to manipulate her father to do her bidding?

Carson revives an old passion for cooking, Anna discovers the secret behind Bates' ticket to London, and Matthew makes an unexpected appearance more than a year after his supposed death. The story follows the last episode of Season 4. Its sequel is titled "A Ticket to Happiness".

Rose attends a village dance, Branson finds a way to get rid of the pesky Sara Bunting, and Mary finds a solution to her suitor problem!