LAPD detective Harry Bosch simultaneously investigates a killer who has been operating undetected for thirty years and a political conspiracy that has its origins in his police department.

"Of #1 New York Times-bestselling author Sue Grafton, NPR's Maureen Corrigan said, "Makes me wish there were more than 26 letters." With only two letters left, Grafton's many devoted readers will share that sentiment. X: The number ten. An unknown quantity. A mistake. A cross. A kiss. X: The shortest entry in Webster's Unabridged. Derived from Greek and Latin and commonly found in science, medicine, and religion. The most graphically dramatic...

"Well-used to elevated emotions, psychologist Alex Delaware shrugs off a joking death threat from beautiful Beverly Hills physician Constance Sykes, whose attempt to secure legal custody of her baby niece is thwarted by Alex's forthright report to the court. Alex plays down the threat until LAPD's Milo Sturgis rushes to his side with the shocking word on the street that a hit's been taken out on him. But while Alex may be in grave danger, it won't...

In the wake of a series of murders including those of a limousine driver and a high-priced escort, an infuriated NYPSD Lieutenant Eve Dallas enters her husband, Roarke's, rarified circle to prevent the imminent killing of another victim.

"A much loved woman's dead body is found in her apartment, victim of horrendous overkill even as her dining room table is perfectly set for a romantic dinner. Turns out her devoted boyfriend has an alibi and, with few clues leading to a suspect, LAPD's Lieutenant Milo Sturgis calls in psychologist Alex Delaware for help. Then another woman's shot execution style; three bullets in the back of her head leave her husband with a profitable business. He's...

"A riveting psychological thriller inspired by the never-caught Zodiac Killer, about a young detective determined to apprehend the serial murderer who destroyed her family and terrorized a city twenty years earlier. Caitlin Hendrix has been a Narcotics detective for six months when the killer at the heart of all her childhood nightmares reemerges: the Prophet. An UNSUB--what the FBI calls an unknown subject--the Prophet terrorized the Bay Area in...

The LAPD asks Terrence McCaleb to investigate a series of puzzling murders, and he quickly discovers that the profile of the killer matches someone with whom he has worked in the past--Detective Harry Bosch.