I think I've mentioned at time or two that, although I love Elizabeth Peters's most popular Amelia Peabody series, I'm actually a tad fonder of both her Vicky Bliss and Jacqueline Kirby series. Now here's the first title in the Vicky Bliss series,
Borrower of the Night, on sale for $1.99 at Kindle and Kobo US.
Kindle US:
https://www.amazon.com/dp/B000FCKM6A
Kindle US/Smile:
https://smile.amazon.com/dp/B000FCKM6A
Kobo US:
https://www.kobo.com/us/en/ebook/borrower-of-the-night