"A Very Simple Crime" by Grant Jenkins

Wow!  What a twist at the end in A Very Simple Crime by Grant Jenkins.  This is about two brothers, Adam and Monty.  One day Adam comes home after a weekend escape with someone not his wife to find his wife dead.  The only other person home was their mentally impaired son who is known for violent outbursts.  When Adam is charged with murder, Monty becomes his lawyer. 

A Very Simple Crime goes very fast.  I got into it quickly and found it hard to put down.  I was only going to give it a 7 plus rating, but the twist at the end boosted it up to a 10!  Yes, it’s that good!  I enjoyed it a lot!
(Gerard's review)

Have you read this one? What did you think of it?