I’m copying this here lest I lost it. It’s an Amazon review of the book The Invited by Dorothy Macardle that also compares it to the film. It appeared first on Fantasy Literature website, wherever that is. I want to make sure I don’t lose track of this review:

https://www.amazon.com/gp/customer-reviews/RNB2PBJ34U5SR/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=B072HH8R24