An unexpected visitor called Mayerling comes in through Hercule Poirot's bedroom and collapses on the floor. The only clue to what he wants is his repeating Poirot's name and address and writing the number 4, many times. When Hastings jokingly calls it "The Mystery of the Big Four," the man begins speaking about an international crime cartel of that name. He describes the four leaders: Number 1 is a Chinese political mastermind named Li Chang Yen;...

"Adapted for young readers and fully illustrated"--cover. Covers the meeting of Sherlock Holmes and Dr. Watson, and some famous cases.

California private investigator Kinsey Millhone is hired to solve a decades-old cold case in this “undeniably entertaining” (Los Angeles Times) #1 New York Times bestseller from Sue Grafton.
Cases don't get much colder than that of Violet Sullivan, who disappeared from her rural California town in 1953, leaving behind an abusive husband and a seven-year-old named Daisy. But PI Kinsey Millhone has promised the...

Private detective Maisie Dobbs must investigate the reappearance of a dead man who turns up at a cooperative farm called the Retreat that caters to men who are recovering their health after World War I.

When they are hired by veteran family court judge Hope Willis to find her missing daughter, Forensic Investigators--a team of renegade investigators comprised of a behaviorist, a techno-wizard, an intuitive, and a former Navy SEAL--must race against time to bring Krissy back alive.

Newly licensed private detective Katie Hasworth faces her first murder case with more than a little anxiety-not only is she a newcomer, but the Chitting family would give Sherlock Holmes a migraine. Who murdered Alexa Chitting before she had time to change her will, leaving her fortune to the Key West Preservation Society rather than to friends and family? Her husband? Lover? Daughter? Katie faces more questions than answers as she faces the dangers...

When his wife goes missing from their Sierra foothills cabin after spotting a suspicious man, the Nameless Detective and his associate, Jake Runyon, launch a search and rescue mission that stretches legal boundaries.

"Gulliver Dowd sets out to help find the daughter of the most powerful Mafia don in New York. His motivations are mixed, as the don holds the key to the mystery of the murder of Dowd's sister, Keisha, but refuses to share that knowledge with Gulliver. Still, Dowd makes a devil's deal and hunts for the girl. Will Dowd find her, or will old secrets and lies boil to the surface and destroy the lives of everyone involved?"--Page 4 of cover.

Parisian P.I. Aimée Leduc is attacked and blinded during an investigation. Can she solve her case without her sight—and when her own life is in danger?
Parisian private investigator Aimée Leduc is all dressed up in her new Chinese silk jacket, supposedly a designer’s “exclusive,” for dinner with a difficult client at an elegant restaurant in the Bastille district. She is chagrined to see that the woman...

When Helene Strauss, the world-famous creator of the Helene doll, has several suspicious brushes with death, PI Savannah Reid is hired to find out who wants Helene dead and discovers that there are more than a few bad apples on Helene's family tree.