I've mis-signed many a book Rollins or Clemens. My readers quickly become aware. Booksellers will often promote me under both names, and I do plug both at signings. Generally, the fantasy reader has no problem going into the suspense genre. It's harder for the typical suspense reader to go the other direction.
James RollinsI subscribe to National Geographic, Scientific American, Discover, and a slew of other magazines. And it is while reading articles for pleasure and interest that an interesting What if? will pop into my head.
James Rollins