The term 'Woman in White' is a reference to the novel of the same name by Wilkie Collins, which was published in 1859. The novel follows the story of a woman named Anne Catherick who is dressed in white and is being pursued by a sinister figure. In the crossword, the solution for the term 'Woman in White' is 'BRIDE', which is fitting as Anne Catherick is revealed to be the long-lost BRIDE of the protagonist.