What does Agatha Christie have to do with spanking romance?

t occurred to me that my new book The Darlington Incident has an oddball influence: Agatha Christie. I grew up reading mystery novels, starting with Nancy Drew and the Hardy Boys as an early reader, and progressing to Agatha Christie by my teen years. I read every single Nancy Drew book at least three times (I used to read one a day when I got home from school) and I know for a fact I have read