I love Book Audio and Focus on the Family do a fabulous job in their presentation, no other have exceeded their standard. The content of the book was also good with some interesting twists that kept the suspence all along teaching another lesson in life. A must listen to even if you don't generally have time... on your way to work perhaps.
I have the whole set of Father Gilbert Mysteries. They are so well done with Radio Theater. You are pulled into the mysteries and can not wait to hear what comes next. There is always a depth of spiritual truths brought out in each mystery.