Angels of Darkness is a collection of four novellas by Nalini Singh, Ilona Andrews, Meljean Brook, Sharon Shinn. From the sample, the titles appear to be:
Nalini Singh -
Angel's Wolf
Ilona Andrews -
Alphas: Origins
Meljean Brook -
Nocturne
Sharon Shinn -
Ascension
I've been watching this on eReaderIQ for a while, as one way of getting the IA novella to read (which is also available on its own, but I'm not wild about paying $2.99 for a novella...).
Angels of Darkness has now dropped to $5.99, which, again per eReaderIQ, is the lowest it has ever been. So now I have to decide whether I want to try four novellas (including two by authors I've not heard of) for $1.50 each or wait a while longer and see if
Alphas: Origins ever drops on its own. Which it never has. Choices, choices...
To add to the fun, IA's website describes
Alphas: Origins as "[t]he most controversial of our novellas. read at your own risk" so I'm wondering WTH is up with that.
Kindle US:
https://www.amazon.com/dp/B0052REUHU
Kindle US/Smile:
https://smile.amazon.com/dp/B0052REUHU
Kobo US:
https://www.kobo.com/us/en/ebook/angels-of-darkness