Having just finished the fifth installment of the endlessing entertaining Flavia De Luce series by Alan Bradley, I thought this would be a good time to promote an oftentimes underappreciated genre, the Cozy Mystery.  "Cozies" are a subgenre of crime fiction, usually set in small communities and feature amateur sleuths who have great senses of humor. What's not to love, right?

Psychological thrillers are fast-paced books that focus on the unstable emotional states of characters. The suspense in psychological thrillers often comes from two or more characters preying upon one another's minds, either by playing deceptive games with the other or by merely trying to demolish the other's mental state. 

Some examples of psychological thrillers are:

Asylum by Patrick McGrath

Before I Go To Sleep by S.J. Watson

The Collector by John Fowles