After his wife’s death and the collapse of his newspaper, David Harwood has no choice but to uproot his nine-year-old son and move back into his childhood home in Promise Falls, New York. David believes his life is in free fall, and he can’t find a way to stop his descent. Then he comes across a family secret of epic proportions that will affect not only his family, but the entire town.

When private investigator Cal Weaver looks into a break-in at the home of a recently deceased man, he uncovers far more than he is prepared for after he finds a hidden room that was used for salacious activities. Detective Barry Duckworth is doggedly trying to solve two murders, one of which is three years old. He believes the killings are connected, since each featured a similar distinctive wound. And the key to his mystery may lie with Cal Weaver’s own case. As the lies begin to unravel, and another murder occurs, Cal and Barry find themselves headed straight into the heart of dark secrets as they uncover more startling truths about Promise Falls.

It’s May 23, and the small town of Promise Falls finds itself in the midst of a full-blown catastrophe with dozens dead from a flu-like virus. Investigator Cal Weaver quickly zeros in on mass poisoning and a tainted water supply. Meanwhile, a college student has been murdered, and Detective Barry Duckworth recognizes a killer’s handiwork from the unsolved homicides of two women in town. Suddenly, the strange events from the last month start to add up. The motive for hurting the people of this town points to the number 23 --- and working out why will bring Duckworth closer to death than ever before.