"Intellectual thriller"
After reading some of the other reviews I was apprehensive about the book and almost didn't purchase it. I'm glad that I did. I found that the book is an intellectual thriller. It is however for adults only.
"Good long listen"
This was written some time in the 70's so technology that we have today wasn't even dreamed of yet, but the story is worth listening to. A bit on the long side, but so was Lucifer's Hammer.
"Sound quality is Terriblele"
I couldn't even listen to the book as the sound quality is terrible, very garbled. Tried with ear buds which was a bit better, but playing it through the car speakers was impossible. This has been the only book from audible that I've had this problem with.