Y Stafell Ddirgel (in English, The Secret Room) is a novel by Marion Eames written in the Welsh language and first published in 1969. An English translation was published in 1975 under the title The Secret Room. In 2001 a highly successful television adaptation appeared on S4C.[1]
The novel is concerned with the persecution of Quakers in North Wales during the seventeenth century.[2] A sequel by Eames, Y Rhandir Mwyn (The Gentle Region) (1990), continues the story.