"Last night I dreamt I went to Manderley again," was the first line of what Daphne du Maurier novel?

"Rebecca" is a thriller novel by English author Dame Daphne du Maurier. A best-seller, "Rebecca" sold 2,829,313 copies between its publication in 1938 and 1965, and the book has never gone out of print. The novel is remembered especially for the character Mrs Danvers, the fictional estate Manderley, and its opening line:

"Last night I dreamt I went to Manderley again."

Du Maurier delivered the manuscript to her publisher, Victor Gollancz, in April 1938. On receipt, the book was read in Gollancz's office and her "editor, Norman Collins, reported simply: 'The new Daphne du Maurier contains everything that the public could want.'" Gollancz's "reaction to Rebecca was relief and jubilation" and "a 'rollicking success' was predicted by him." He "did not hang around" and "ordered a first print run of 20,000 copies and within a month Rebecca had sold more than twice that number." The novel has been continuously in print since 1938 and in 1993 "du Maurier's US publishers Avon estimated ongoing monthly paperback sales of Rebecca at more than 4,000 copies."