Not so much an audiobook as a radio play. A comic spoof of the radio serials of yesteryear, with the kind of witty dialogue and wordplay that those familiar with the original Hitchhikers Guide to the Galaxy radio series remember and love. However, judging by the Amazon UK reviews, fans of the original Sexton Blake series hate this with a passion comprised mostly of disappointment. Me, I'd never heard of him before, so found this as funny as a very funny thing.