When Mary finds herself in a public scandal and the family faces financial trouble, the household grapples with the threat of social disgrace. The Crawleys must embrace change with the next generation leading Downton Abbey into the future.
When Enola Holmes, Sherlock's sister, discovers her mother is missing, she endeavors to find her, becoming a super-sleuth in her own right as she outwits her famous brother and unravels a dangerous conspiracy.