May I offer my translation? There's not a lot of relevant information on the Amazon.co.jp page itself apart from basic details such as ISBN and how to order it, unfortunately, and the scan of the cover is too low a resolution for me to be able to make out many of the characters. The big white characters at the top are the title, which is just the Japanese version of the English one (though wana 罠 is perhaps closer to 'snare' than 'trap').
Below that the red characters say "How the 'self-planned, self-executed' theory came to be". At the bottom left, I can't quite make this out, but I think it says "How could professors and even journalists be taken in hook, line and sinker?" Below that is a list of what I assume are the most common conspiracist theories, and right at the bottom left the final word "They're all LIES!" (note the big, white uso 嘘 there for maximum impact).
Sorry I can't be of more help - the red font of the characters makes it rather hard to read them. If anyone has a better resolution scan, I could probably do a better job...
