• "A compulsively readable novel"

    Iain Pears
  • "A genuine treat, with its sneaky plot and richly textured storytelling. It also moves so fast that readers won't realize how smart it is"

    San Francisco Chronicle
  • "Codex takes its place on the shelf [with] The Name of the Rose, Possession and A Case of Curiosities, and it's as entertaining as any of them"

    New York Times
  • "Fabulously entertaining ... By turns fascinating, compelling, and deliciously disturbing. It's an intelligent thriller that truly is just that: intelligently thrilling"

    Boston Globe
  • "Mesmerizing from start to finish ... A fabulous double-helix of a novel"

    Baltimore Sun