James Rollins is the author of international thrillers that have been translated into more than forty languages. His Sigma series has been lauded as one of the "top crowd pleasers" (New York Times) and one of the "hottest summer reads" (People mag. Download eBooks by author James Rollins. Guaranteed best prices, direct download! Search. James Rollins eBooks Epub and PDF format James Rollins eBooks. eBooks found: The Demon Crown: A Sigma Force Novel. James Rollins. William Morrow, December ISBN: Format: ePub. Our price: $ James Rollins is the author of fourteen thrillers in the bestselling Sigma Force series: Sandstorm, Map of Bones, Black Order, The Judas Strain, The Last Oracle, The Doomsday Key, The Skeleton Key, The Devil Colony, Tracker, Bloodline and The Eye of God, The Kill Switch, 6th Extinction, The Midnight Watch, The Bone Labyrinth, Crash and Burn,The Seventh Plague, The Demon Crown and Crucible.