When the body of a local teenager is found in a community garden, homicide detective Gus Ramone relives intense memories of a case he worked twenty years earlier. When he was still a rookie, Ramone and his partner Dan "Doc" Holiday assisted legendary detective T.C. Cook as he investigated a series of killings involving young victims left overnight in neighborhood parks.

The killer, dubbed, "the Night Gardener," was never caught. Since then, Holiday has left the force under a cloud of morals charges; he now works as a bodyguard and driver, taunted by his dreams of what he might have been. Cook retired, but he has never stopped agonizing about the unsolved case. Ramone is "good police," working as a homicide detective for the city's violent-crime division. He is also a devoted husband and father, and his teenage son, Diego, was a friend of the most recent victim, a boy named Asa.

Could the Night Gardener be on the prowl again? Asa's death draws the three men together on a mission to finish the work that has haunted them for years. For T.C. Cook, it means solving one of the few cases that eluded him in his distinguished career. For Doc Holiday, the Night Gardener case is one last chance to prove - to Cook, to Ramone, and to himself - what kind of police officer he once was.

For Gus Ramone, catching the killer means not only doing his job but knowing that his son will not be the next victim. The regret, anger, and fierce sense of purpose that once burned between them come rushing back as they race to lay to rest the monster who has stalked their dreams.