Several months into his recovery from a near-fatal illness, thirty-four-year-old novelist Sidney Orr enters a stationery shop in the Cobble Hill section of Brooklyn and buys a blue notebook. It is September 18, 1982, and for the next nine days Orr will live under the spell of this blank book, trapped inside a world of eerie premonitions and bewildering events that threaten to destroy his marriage and undermine his faith in reality.