Czar of Fear, No. 22 and Fortress of Solitude, No. 23

I was surprised that these books in the series, specifically, weren't reviewed to the gills by Savage fans everywhere.These books are probably the most powerful in the Doc Savage series, and most important in the legend. The reason: the introduce and herald the return of the most evil of all Doc's villians: John Sunlight. This man is almost the match of Doc, the only criminal to ever reappear in the series, to truly give Doc a run for his money with a mind just as coldly calculating, twisted, and efficient as Doc's was scientific and humane, and also the villian who most terrified Doc personally and discovered a lot of the secrets behind Doc Savage. In most regards, Sunlight (echoing the name of Lucifer in the bible as the Morning Star and fallen angel) was the antithesis of Doc Savage in mind, body, and soul. Sunlight is a devil, for sure, and fittingly his true identity is never discovered, though he did first appear in the northern reaches of the arctic, which in Scandanavian myth is the domain of Hel.These books are at the core of the Doc Savage mythos.