Sometimes true love makes itself known in mysterious ways. However, in this story no such luck! Ian is a retired very rich lawyer, his wife, Martha, is a frigid woman, it seems, and Cathy is a delightful sexually mature, young woman who is lusted after by her father (in secret, of course.) So, there they are staying for a few weeks at the country club when one night Martha gets a migraine attack and sleeps it off aided by two sleeping pills, and Cathy also sleeps it off aided by nearly a bottle of expensive liquor! Guess what. Yep old daddy does the dirty with comatose daughter, who wakes up the following morning full of daddy's sperm, and that evening Ian does it again!
JayBee's heroines seem to have a propensity for attracting sperm to their fertile eggs, and pleasantly surprising the mommas in these stories concur with having grand children who are their mother's step brothers, I think.