Joan Henry sentenced to 12 months imprisonment. She served eight months, the majority at Holloway prison, and also at Askham Grange open prison. Before her imprisonment, Henry earned a living writing romance novels. She came to prominence in 1952 with the publication of "Who Lie in Gaol" (the title was taken from a line in Oscar Wilde's "The Ballad of Reading Gaol"), based on her experiences in prison, which became a best-seller. Henry was critical of Holloway prison, giving accounts of brutal treatment and neglect she had witnessed. The book was the basis for the film "The Weak and the Wicked" (1953),
The Ballad of Reading Gaol book demanded a change—for fear that the prison doctor would sue over the line which originally read "While the coarse-mouthed doctor gloats", it was changed to "While some coarse-mouthed doctor gloats". As one biographer, Leonard Cresswell Ingleby, said, "Never, perhaps, since Gray's "Elegy" had a poem been so revised, pruned, and polished over and over again as this cry from a prison cell". Originally the first edition—with no assurance of a second edition—was planned for only 400 copies, but when Wilde calculated the printing expenses, he realised that even selling all 400 would not cover costs, and at his instigation