I read a lot of mystery, thriller, suspense and legal fiction. Seems like I am always running out of good authors to read. Then last year my sister introduced me to Lee Child's Reacher series. These are great.
For those of you who haven't heard of them, the protagonist, Jack Reacher, is a former military police officer who wanders through the country with nothing but a folding toothbrush in his pocket. He always seems to fall into trouble. But don't worry, he is up to the challenge.

Here is a link to the author's site with a list of the books. They are super. Read them all.
The Reacher Books