Set twenty years before The New Series - sheds some new light on three characters- Adama, Tigh and Zarek. The latter two are much more prominent and interesting here than Adama. There is some more information about origins of Cylon and their rebellion. Author introduces some new characters and makes you wonder will they somehow turn up later in the TV series or they perished in the Second Cylon War. Overall nice fast read, very plausible scenarios and details perfectly fitting with what we saw on TV. Great companion book for fans of the Series and probably a waste of time for those not familiar with it - word of advice: GET FAMILIAR WITH IT you won't regret.