This is the first four books of a seven book series by James Patterson.  All Hardcover
 
NYPD Red - 
It's the start of Hollywood on Hudson, and New York City is swept up in the glamour. Every night, the red carpet rolls out for movie stars arriving at premieres in limos; the most exclusive restaurants close for private parties for wealthy producers and preeminent directors; and thousands of fans gather with the paparazzi, hoping to catch a glimpse of the most famous and beautiful faces in the world. With this many celebrities in town, special task force NYPD Red is on high alert-and they can't afford to make a single mistake. Then a world-renowned producer fatally collapses at his power breakfast, and top NYPD Red Detective Zach Jordan is the first one on the scene. Zach works with his beautiful new partner, Detective Kylie MacDonald-who also happens to be his ex-girlfriend-to discover who the murderer might be. But this is only the beginning: the most brutal, public, and horrifyingly spectacular crimes they've ever encountered are about to send all of New York into chaos, putting NYPD Red on the ropes. Zach and Kylie know there's no way of telling what a killer this deranged will do next. With the whole world watching, they have to find a way to stop a psychopath who has scripted his finale down to the last explosive detail. With larger-than-life action, relentless speed, and white-knuckle twists, NYPD Red is the next mega-blockbuster from "The Man Who Can't Miss." 
 
NYPD Red 2 - When NYPD Red arrives at a crime scene, everyone takes notice. Known as the protectors of the rich, famous, and connected, NYPD Red is the elite task force called in only for New York City's most high-profile crimes. And Detective Zach Jordan is the best of the best, a brilliant and relentless pursuer of justice. He puts professionalism above all, ignoring his feelings for his partner, Detective Kylie MacDonald, the woman who broke his heart when they first met in the academy.
 
NYPD Red 3 -  NYPD Red is the elite, highly trained task force assigned to protect the rich, the famous, and the connected. And Detective Zach Jordan and his partner Kylie MacDonald-the woman who broke his heart at the police academy-are the best of the best, brilliant and tireless investigators who will stop at nothing to deliver justice.
 
NYPD Red 4 - A jewel heist. A murdered actress. A killer case for NYPD Red.In a city where crime never sleeps, NYPD Red is the elite task force called in when a case involves the rich, famous and connected. Detectives Zach Jordan and Kylie MacDonald are the best of the best – brilliant and tireless investigators who will stop at nothing to catch a criminal, even if it means antagonising the same powerful people they're supposed to be helping.