Kindle Unlimited Fiction Recommendations

Last week during Prime Day I succumbed to the temptation to get Kindle Unlimited at a discount for 2 years. Let's not debate if KU is worth it or not (or how much you need to read to make it worthwhile); at that price I could not resist.

Finding novels to read seems like a real problem. I start searching and I can't tell the good from the bad. So I'm looking for recommendations in fiction, mystery, suspense, although I also read SF and fantasy stuff.

I found one which I started: Stillhouse Lake by Rachel Caine.
https://www.amazon.com/Stillhouse-La.../dp/B01MFGX5GI

I initially resisted this but it's good so far.