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.

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.

Tough-as-nails criminal defense attorney Jane Smith is hip-deep in the murder trial of the century. Actually, her charmless client might’ve committed several murders. She’s also fallen in love with a wonderful guy. And an equally wonderful dog, a mutt. But Jane doesn’t have much time. She’s just received a terminal diagnosis giving her twelve months. Unless she’s murdered before her expiration date.

NYPD Red is a special task force charged with protecting the interests of Manhattan's wealthiest and most powerful citizens. When a world-famous movie producer is poisoned on the first day of a Manhattan film festival called Hollywood on the Hudson, they are the first ones called. Then an actor is killed on the set of a film. And a Molotov cocktail explodes at a movie premiere.

Former Marine helicopter pilot Jack Morgan runs Private, a renowned investigation company with branches around the globe. It is where you go when you need maximum force and maximum discretion. Jack is already deep into the investigation of a multi-million dollar NFL gambling scandal and the unsolved slayings of 18 schoolgirls when he learns of a horrific murder close to home: his best friend's wife, Jack's former lover, has been killed. It nearly pushes him over the edge. Instead, Jack pushes back and devotes all of Private's resources to tracking down her killer.