Upon publication, the book sold more than 15,000 copies in the first two weeks, and overall, more than 350,000 copies in the United States, and was described as a
bestseller in 1944. It received generally positive reviews in American mainstream press of that time, with coverage in outlets such as
The New York Times, the
New York Herald Tribune, the
Los Angeles Times and
Time. Another review from that year was penned by W. J. R. for
International Affairs. The reviewer praised the work for explaining "the structure of the machinery of resistance", and predicted that it would become a classic. Peter Conrad reviewed the new edition of this book for
The Guardian in 2011, criticizing its writing style as "political melodrama" in the style of "a 40s espionage thriller", arguing that the outdated writing style obscures the valuable historical account of the underlying history, though at the same time he noted that parts of the book "resemble scenes tantalisingly directed by
Hitchcock". On the other hand, Nigel Jones, who reviewed it that year for
The Telegraph, noted that "it deserves its status as a
Penguin Classic, not only because it is a great historic document, but also because it’s a cracking good read: Karski’s adventures are worthy of the wildest spy thriller". A reviewer for the
Culture.pl portal also commented on Karski's writing style, saying that the work "reads like the screenplay to a war movie". Reviewing this edition for the
Michigan War Studies Review in 2013, Donald Lateiner described it as "exciting but self-effacing" piece that still "has not lost its freshness". == Analysis ==