Imagine just wandering around going from one adventure to the next. No job (retired miltary) no commitments, don't have to be anywhere at any time. How cool is that?
When he notices his clothes are getting a bit raggety/stinky he finds some thrift shop. Dumps the old stuff.
He spends a lot of time hitch hiking. So many of his adventures start with some ride.
Then there was the time he was in Georgia and started thinking about just how did blues icon Blind Blake die? Something that is a huge blues mystery, he just vanished. So he decides to see what he can find out. Which gets him involved in something else.
Reacher is an X Army cop, a major. Extremely intelligent to go with street smarts. And a massive powerhouse at 6-5 250 pounds of muscle. The guy is a load.
The current Jack Reacher novel is The Midnight Line. Here he is trying to find a fellow soldier who pawned a ring from West Point, since the ring is small he figures it must belong to a female. What he encounters in search of the owner takes us on an exciting journey. We are now in Wyoming after starting out in Ohio and having to deal with Jimmy the Rat and his seven biker buddies who Reacher left laid out in a bar parking lot.
If you have never read Jack Reacher I highly recommend it.
It was about five years ago at a yardsale, I'm looking at some books when this old lady...."you ever read Lee Child?'" I told her....nope. She says....he writes about a big guy like you I think you'd like his books. So I bought the three she had and have read all of them, but, waited until I had the first one then did it in order.
Then there is James Lee Burke and his Louisiana detective Dave Robicheaux. Like Reacher we have seen Robicheaux in the movies, Tommy Lee Jones played the part.
What's kinda weird is both Child and Burke know them blues. Burke talking about Lead Belly, Hogman Maxey.....who recorded a few songs while in Angola Prison. Only a serious blues freak could know about him. I own those prison recordings.

