Naomi Jacob was quite prolific, over 70 novels etc but very few read her these days. Her biography is quite fascinating, an unrequited crush on Radclyffe Hall's partner indeed! I digress however, Second Harvest is pretty solidly middlebrow. Young nurse has a fling with a recuperating soldier lothario, has one night of passion and falls pregnant. Faced with this reality in the early 1940's she marries another wounded soldier in the hospital who has fallen hopelessly in love with her.
Unfortunately he is killed in the war and no one knows that her child is not his. Should she tell the truth to her in-laws whom she has been living with or should she maintain the fiction. Oh the suspense and the melodrama, you'll just have to read it to find out what happens.
Far superior to the one other title, I read of hers, Jacob Usher which was dreadful, it's still far from an essential or unfairly neglected book but does address the difficulties unwed pregnant women faced in society.