Lit Rumors where authors are unmasked

There's a rumor going around that Eric Holder penned the book Ransom X - a pretty racy fiction thriller book about an FBI interrogator who goes too far (does that sound familiar?). The name on the book is I.B. Holder, but that sounds like a pen name. The book is pretty good, but the crimes in it are pretty graphic. I can see why he wouldn't want his name on it. If he did write it, I think it's pretty cool. I like the fact that he’s got a wild side.