The guide is real. I received the password from the James Rollins website and logged in and went to their "Guides" webpage.
https://jamesrollins.com/reader-guides/ There is a guide for the Sigma Force novels, and one for the Individual Adventures novels. The Individual Adventures books all have their own separate guide, but you can get them all bundled together in one file, which was my preference.
All of the Individual Adventures are covered. the Sigma Force novels are covered up through Devil Colony, but the later books are not included. Looks like Rollins must have been working on writing Bloodline when the guide came out - it is briefly mentioned, but not covered. Neither is anything after Bloodline.
These guides give a pretty detailed description of the plots of the books. Each book's guide is about 5-8 pages long. Then in the Sigma Force guide, there is a separate section that describes each character of the novels. Each characters description is about 2 pages long. These guides will be very useful for me - I'm always remembering bits and pieces of Rollins' novels, and trying to recall which bit when with which novel. These guides will be great for sorting that out!
Supplied in a ZIP file that contains the guides in MOBI, EPUB, and PDF format. Plus a high resolution JPG of each of the guide covers. The Sigma Forece guide zipfile is 6.9Mb, the Individual Adventures guides zipfile is 19.5Mb.