Chromosome 6 book. Read 315 reviews from the world's largest community for readers. The harrowing new bestseller form the master of medical thrillers, written with the bold strokes of reality that are Robin Cook's trademarks. Chromosome 6 is one of them. I have been collecting many Robin Cook novels and many of them seem page turners and hard to put down. Chromosome 6. The beginning is captivating like most if not all of Robin Cook's style of storytelling. When notorious underworld figure Carlo Franconi is gunned down, his Mafioso competitors become prime suspects.