My library supports Libby which I like more than Overdrive. Love Travis McGee! (also a lot of Elvis Cole, Harry Bosch, and Elmore Leonard from the library).I really like the Travis McGee books. I definitely will read all of them. I haven't read many of MacDonald's other books. I enjoyed The Executioners which was adapted to the movies as Cape Fear. The book is much darker than the film in terms of the main character Sam Bowden and why Max Cady is out to get him.
The Travis McGee books also feature murderous psychopaths!
You are right on about using Overdrive. I read most of my books on loan from the library.
Currently I'm reading a Georges Simenon book called Maigret's Holiday. Also a loaner from the library. The Maigret books are quiet enjoyable and I'm looking forward to reading many more of them!
A little hack: if you have a kindle and have trouble finishing a book during the loan period, you can put it into airplane mode. The book will be returned to the next patron but you can finish reading it.
Currently finishing Bernard Cornwell's Enemy of God, the second in his Warlord Chronicles trilogy. This is a gritty telling of the Arthurian saga. Highly recommended!