Darby McCormick had known Melanie Cruz and Stacey Stephens forever. Best friends since childhood, the threesome had survived high school together. But one night in the woods, drinking beers to celebrate Melanie's 16th birthday, the three unsuspecting teenagers witnessed the grisly murder of a woman. Darby and her friends fled the scene, but they left behind a clue to their whereabouts, which only simplified the killer's revenge. It didn't take long to find them. This time, only Darby survived.

Jack Casey was the FBI's best profiler until a madman forced him to watch the brutal murder of his pregnant wife. Six years later, he's rebuilding his life as a small town cop. But suddenly, a killer known as the Sandman is in town, torturing and murdering entire families at a time. The Sandman knows all the sordid details of Jack's past, and he's using them to taunt him. Can Jack face his demons and risk everything again to stop the slaughter?

Frankie Elkin is an average middle-aged woman, a recovering alcoholic with more regrets than belongings. But she spends her life doing what no one else will - searching for missing people the world has stopped looking for. When the police have given up, when the public no longer remembers, when the media has never paid attention, Frankie starts looking. A new case brings her to Mattapan, a Boston neighborhood with a rough reputation. She is searching for Angelique Badeau, a Haitian teenager who vanished from her high school months earlier.

One year ago, Isabelle Drake's life changed forever: her toddler son, Mason, was taken out of his crib in the middle of the night while she and her husband were asleep in the next room. With little evidence and few leads for the police to chase, the case quickly went cold. However, Isabelle cannot rest until Mason is returned to her—literally. Except for the occasional catnap or small blackout where she loses track of time, she hasn’t slept in a year. Isabelle's entire existence now revolves around finding him, but she knows she can’t go on this way forever.

For maverick LAPD homicide detective Harry Bosch, the body in the drainpipe at Mulholland Dam is more than another anonymous statistic. This one is personal...because the murdered man was a fellow Vietnam "tunnel rat" who had fought side by side with him in a hellish underground war. Now Bosch is about to relive the horror of Nam. From a dangerous maze of blind alleys to a daring criminal heist beneath the city, his survival instincts will once again be tested to their limit.