In The Coldest Case: A Black Book Audio Drama, homicide detective Billy Harney sends his new partner, Kate, deep undercover in a notorious Chicago drug ring. When several members of the ring soon turn up dead, Billy abruptly pulls Kate out, blowing her cover. Kate’s informant inside the gang quickly disappears. As does the ring’s black book.... When Billy can’t find the informant, he wonders if Kate is secretly harboring her, since the two grew close during Kate's weeks undercover.

When former prosecutor Penn Cage returns to his hometown of Natchez, Mississippi, he doesn't find the peace he desperately craves. He finds that his own father is being blackmailed by a corrupt ex-cop. And when Penn investigates, he uncovers a murderous secret - and the small town's violent past.

Dr. Dylan Reinhart wrote the book on criminal behavior. Literally - he's a renowned, best-selling Ivy League expert on the subject. When a copy of his book turns up at a gruesome murder scene - along with a threatening message from the killer - it looks like someone has been taking notes. Elizabeth Needham is the headstrong and brilliant NYPD Detective in charge of the case who recruits Dylan to help investigate another souvenir left at the scene - a playing card. Another murder, another card - and now Dylan suspects that the cards aren't a signature, they're a deadly hint.

Mason "Mace" Perry was a firebrand cop on the D.C. police force until she was kidnapped and framed for a crime. She lost everything-her badge, her career, her freedom-and spent two years in prison. Now she's back on the outside and focused on one mission: to be a cop once more. Her only shot to be a true blue again is to solve a major case on her own, and prove she has the right to wear the uniform.

Alex Cross is a homicide detective with a Ph.D. in psychology. He works and lives in Southeast D.C. and looks like Muhammad Ali in his prime. He's a tough guy from a tough part of town who wears Harris Tweed jackets and likes to relax by banging out Gershwin tunes on his baby grand piano. But he also has two adorable kids of his own, and they are his own special vulnerabilities.

Richard "The Ice Man" Kuklinski led a double life beyond anything ever seen on The Sopranos, becoming one of the most notorious professional assassins in American history while hosting neighborhood barbecues in suburban New Jersey. Now, after 240 hours of face-to-face interviews with Kuklinski and his wife and daughters, author Philip Carlo tells his extraordinary story.

Getting shot in the chest as a rookie ATF agent, bartering for machine guns, throttling down the highway at 100 miles per hour, and responding to a full-scale, bloody riot between the Hells Angels and their rivals, the Mongols - these are just a few of the high-adrenaline experiences Jay Dobyns recounts in this action-packed, hard to imagine, but true story of how he infiltrated the legendary Hells Angels.

In 1998, William Queen was a veteran law-enforcement agent with a lifelong love of motorcycles and a lack of patience with paperwork. When a "confidential informant" made contact with his boss at the Bureau of Alcohol, Tobacco and Firearms, offering to take an agent inside the San Fernando chapter of the Mongols (the scourge of Southern California, and one of the most dangerous gangs in America), Queen jumped at the chance.

Four bodies, each with a single bullet wound in the back of the head, stacked like cordwood in a weed-choked vacant lot: That's the front-page news facing Carter Ross, investigative reporter with the Newark Eagle-Examiner. Immediately dispatched to the scene, Carter learns that the four victims - an exotic dancer, a drug dealer, a hustler, and a mama's boy - came from different parts of the city and didn't seem to know one another.

When Dinko Babich, a young longshoreman, delivers Lita Medina, a young Mexican dancer, from San Pedro Harbor to a Hollywood nightclub, their lives are forever changed. An unexpectedly tender and moving love story develops among the cops and criminals who occupy the harbor, and soon Dinko and Lita are caught up in terror and peril through no fault of their own.

From a bluff overlooking Georgia's untamed Chattooga River, an assassin fires three shots. The President of the United States is wounded; his best friend and a Secret Service agent are killed. Two days later, a man in Landover, Maryland, commits suicide, and in the man's home is overwhelming evidence that he was responsible for the assassination attempt.

Philadelphia, 1965: Two street cops—one black, one white—are gunned down in a corner bar. One of the fallen officers, Stan Walczak, leaves behind a 12-year-old boy, Jimmy. Philadelphia, 1995: Homicide detective Jim Walczak learns that his father's alleged killer, Terrill Lee Stanton, has been sprung from prison. Jim stalks the ex-con, hoping to finally learn the truth.

On January 21, 1998, the night before his 38th birthday, federal prosecutor Stanley Alpert was kidnapped by a car full of gun-toting thugs. Hoping to make a large withdrawal with his ATM card, they took him, blindfolded, to a Brooklyn apartment, and improvised. All night, his captors alternately held guns to his head, threatened his family, engaged him in discussions of "gangsta" philosophy, sought his legal advice, and even offered him sexual favors from their prostitute girlfriends as a "birthday present."

Gus Murphy thought he had the world all figured out. A retired Suffolk County cop, he had everything a man could want: a great marriage, two kids, a nice house, and the rest of his life ahead of him. But when tragedy strikes, his life is thrown into complete disarray. In the course of a single deadly moment, his family is blown apart, and Gus is transformed from a man who believes he understands everything into a man who understands nothing.

L.A. police detective Shane Scully comes under investigation by Internal Affairs (derisively known as "the tin collectors") after he kills his ex-partner who was one of the mayor's bodyguards. Temporarily reassigned, so that he can remain under the department's watchful eye, Scully finds that more than his badge is at stake when he is set up to take the rap in a deadly plot of corruption and conspiracy that reaches to the highest levels of the LAPD.