Private Investigators Mysteries

Professor Olive Twist has come to Zinnia, Mississippi, to study a mysterious grave wherein lies the Lady in Red, a perfectly preserved and stunningly beautiful but unnamed and unclaimed body. Olive claims she can not only identify the corpse, she can also prove the woman’s scandalous role in the nation’s history. Olive takes it a step too far, though, when she starts connecting elite Zinnia families with the same scandal. Dander up, Zinnia’s society ladies know only one way to handle Olive: They call on the private investigative services of Sarah Booth Delaney.

A Son Haunted by His Father’s Sins As private investigator Frankie Dawson begins to build a new life for himself in Memphis, he takes on the disturbing cold case of an ambitious young reporter who vanished without a trace decades earlier. When the woman’s disappearance is linked to a barrel of human remains found at a new construction site, and a potential witness to the crime goes missing, Frankie finds himself at the heart of a serial murder investigation. In a desperate bid to stop the cold-blooded killer before another body is found, Frankie unearths the chilling truth about his ...

For the men of Madison Avenue, the battle between soft-drink giants Cherr-o-key and AmeriCherry seems heaven-sent. For years now, the firm of Mills/Lake/Ryman has fought to help Cherr-o-key become the nation’s favorite fizzy cherry soda, but each time they come up with a new slogan, mascot, or jingle, AmeriCherry somehow beats them to it. There’s a mole inside the agency, and only Nero Wolfe can ferret him out.

The story is not your typical murder mystery. The sleuth is not a detective, private eye, or lawyer. He's an ordinary guy with an extraordinary dog. Jacob Martin is trying to make the best of a divorce and mid-life crisis when he gets a call at two o'clock Sunday morning from his mother. His sister has been arrested for the murder of her fourth husband, and his father is near death. Thus begins an adventure that takes Jake and his golden retriever from their Colorado retreat to a backwater town in the Missouri Ozarks.

When an old acquaintance, finance magnate Eleanore Paget, hears August is back in town, she tries to hire him to investigate suspicious goings-on at her investment bank. August declines - detective work is no longer his beat. When Eleanore is found dead the next day of an apparent suicide, August doesn't buy it for a minute. His search for her killer will drag him into a rat's nest of Detroit's most dangerous criminals.

Vivian, a former reporter and a newlywed, doesn’t know what to do with herself after an incident with her husband forces her to question their partnership and her future. Yearning for the ocean air and a sense of home, she retreats to Tybee Island to clear her head and visit her Nana, a retired PI who now struggles with dementia. The phone rings: Catherine Grant, a housewife living in a private development nearby, woke up to find her husband and their baby girl missing, and she is desperate for help.

Fall 1889: Lady Rotherton has arrived from London intent on chaperoning her niece Prudence through a New York social season to find a suitable husband. It's certainly not her niece's devilishly handsome partner in Hunter and MacKenzie Investigative Law. Aunt Gillian's eye for eligible suitors is surpassed only by her ability to discern genuine gems from nearly flawless fakes. At the Assembly Ball at Delmonico's, she effortlessly determines that the stones in the spectacular diamond waterfall necklace adorning the neck of the wife of banker William De Vries are fake.

There are few people Nero Wolfe respects, and Lon Cohen of the New York Gazette is one of them. So when Cohen asks for a favor, the famously brilliant - and notoriously lazy - detective is inclined to listen. According to Cohen, someone wants to kill the Gazette’s gossip columnist, Cameron Clay. Death threats are a regular hazard for Clay, who’s hurled insults and accusations at every boldfaced name in the five boroughs. But the latest threats have carried a more sinister tone.

Thomas Fool is an Information Man, an investigator tasked with cataloging and filing reports on the endless stream of violence and brutality that flows through Hell. His job holds no reward or satisfaction, because Hell has rules but no justice. Each new crime is stamped "Do Not Investigate" and dutifully filed away in the depths of the Bureaucracy. But when an important political delegation arrives and a human is found murdered in a horrific manner - extravagant even by Hell's standards - everything changes.

The trouble at the Conlee’s lakeside estate begins when vandals topple and destroy an expensive Italian fountain. Then they slash the tires and damage the paint job on a Jaguar. That’s when Roy Ballard's client, the insurance company, asks him to catch the vandal in the act and prevent future claims. Surprisingly, the homeowner, Norman Conlee, opposes the idea. He intends to address the problem himself by fencing the property and keeping his revolver handy. Eventually, though, he gives in, and Roy goes to work.

Atticus Riot took a bullet to his head the day his partner was killed. Three years later, Riot returns to San Francisco to put his ghosts to rest, but the abduction of an heiress snags his attention. Two ransom demands are delivered, and the husband of the abducted Isobel Kingston is hiding the truth. The clock is ticking. Can Riot find Mrs. Kingston in time, or will she become one more regret among many?

Meet Roy Ballard, freelance videographer with a knack for catching insurance cheats. He's working a routine case, complete with hours of tedious surveillance, when he sees something that shakes him to the core. There, with the subject, is a little blond girl wearing a pink top and denim shorts - the same outfit worn by Tracy Turner, a six-year-old abducted the day before. When the police are skeptical of Ballard's report - and with his history, who can blame them? - it's the beginning of the most important case of his life.

World famous concert pianist Felix Lansman has a collection of postcards sent to him anonymously. He is sure they are from the love of his life, Jamie McLeash. But Jamie disappeared six years ago - the night Felix’s father was murdered. Police failed to make any arrests and the case was closed. Was Jamie a suspect and if so, why is he sending the postcards? Felix wants Ian to find out.

Henry Parker's life is looking up. He just landed his dream job as a reporter at the renowned New York Gazette, has a great girlfriend, and the world at his fingertips. Henry is smart. Ambitious. Determined. He's ready to take the world by storm. But Henry's dream is about to turn into a nightmare.... On his first assignment, a man ends up dead, and Henry finds himself on the run and accused of murder. On his trail is a dogged cop who wants to see Henry behind bars, and a ruthless, demented assassin who wants to see Henry dead. Henry's only hope of survival is a woman he barely knows.

A perfectly plotted crime is foiled by a runaway bank clerk as Inspector Littlejohn navigates impersonation, forgery, embezzlement...and a murder. It was meant to be a fool-proof scheme. The victim was a recluse, cut off from the world after the death of his wife. Nobody would think it strange when they didn't see him. Nobody would make inquiries. Yet, even the most meticulous of criminals can be caught out, especially if they don't leave room for human error.

Only a few weeks into her new job as a private investigator, Lexi Graves thinks she may have bitten off more than she can chew with her first solo cases. In between going undercover as a plush pony at a "Bronie" conference and following her cheating brother-in-law, she's got a saboteur-turned-killer to catch and a missing woman to find. Two of her cases may be connected, but how? Her boss, the mysterious Solomon, meanwhile, hopes to get her between the sheets....

A new novel from Mulholland Books / Little, Brown and Company, publishing September 2025.

September 1909, and Lady Hardcastle and her maid, Florence, have been invited to Lord Riddlethorpe’s country estate for a week of motor racing and parties. They both agree that it sounds like a perfectly charming holiday. But when one of the drivers dies in a crash during the very first race, they discover that what seemed like an uncharacteristic error in judgement may have a more sinister explanation...

Gus Murphy and his girlfriend, Magdalena, are put in harm's way when Gus is caught up in the distant aftershocks of heinous crimes committed decades ago in Vietnam and Russia. Gus' ex-priest pal, Bill Kilkenny, introduces him to a wealthy businessman anxious to have someone look more deeply into the brutal murder of his granddaughter. Though the police already have the girl's murderer in custody, they have been unable to provide a reason for the killing.

As long-buried memories from his hidden past begin to resurface, Ishmael Jones and his partner Penny feel compelled to return to the small country town where Ishmael crash-landed in 1963; the place where his memories began. Norton Hedley is no ordinary town. Apparitions, sudden disappearances, sightings of unusual beasts: For centuries, the place has been plagued by a series of inexplicable events. Ishmael’s first task is to track down local author Vincent Smith, the one man he believes may have some answers.