::: Inferno (Niven and Pournelle)

Couldn't stop myself. Had to go back and re-read it after reading their sequel and Dante's original. It's as good as I remembered. Like any good retelling or adaptation, it's true to the spirit of the original but transforms it into a shape that's relevant for the new audience (some critic said the Watchmen movie suffered from its slavish devotion to the original -- said it was "more a curation than an adaptation" LOL!). Double plus good :)