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 read anything I could get my hands on: science fiction, fantasy, horror, thrillers. I even became hooked on the Bantam reprints of the old pulp novels from thirties and forties: Doc Savage, The Shadow, The Avenger.
James Rollins