Rebecca Stott was born a fourth-generation Brethren she grew up in England, in the Brighton branch of the Exclusive Brethren cult in the early 1960s. Her family dated back to the group's origins in the first half of the nineteenth century, and her father was a high-ranking minister. However, as an intelligent, inquiring child, Stott was always asking dangerous questions and so, it turns out, was her father, who was also full of doubt. When a sex scandal tore the Exclusive Brethren apart in 1970, her father pulled the family out of the cult. But its impact on their lives shaped everything before and all that was to come.

'The Iron Room' (named for the windowless meeting houses made of corrugated iron where the Brethren would worship) is Stott's attempt to understand and even forgive her father: a brilliant, charismatic, difficult, and at times cruel man who nonetheless inspired his daughter with his love of literature, film, and art and with his passion for life.