The Door (Rinehart novel)

The Door is a novel by American writer Mary Roberts Rinehart. It was first published in the United States by Farrar & Rinehart on March 28, 1930.

Rinehart, who had been a prominent author since 1907, wrote The Door quickly while recovering from an illness in a hospital for her two sons, who had launched the publishing house Farrar & Rinehart and wanted an early commercial success. Rinehart broke her long-standing contract with Doubleday and published the novel. It was a No. 1 bestseller.