The ornate reading room at the Boston Public Library is quiet—until the tranquility is shattered by a woman's terrified scream. Security guards take charge immediately, instructing everyone inside to stay put until the threat is identified and contained. While they wait for the all-clear, four strangers, who'd happened to sit at the same table, pass the time in conversation, and friendships are struck. Each has his or her own reasons for being in the reading room that morning—it just happens that one is a murderer.

Erin McCabe has been referred the biggest case of her career. Four months ago, William E. Townsend, Jr., son of a New Jersey state senator, was found fatally stabbed in a rundown motel near Atlantic City. Sharise Barnes, a 19-year-old transgender prostitute, is in custody, and given the evidence against her, there seems little doubt of a guilty verdict. Erin knows that defending Sharise will blow her own private life wide open, and doubtless deepen her estrangement from her family. Yet as a trans woman, she feels uniquely qualified to help Sharise.

When clever, headstrong Kaveri moves to Bangalore to marry handsome young doctor Ramu, she’s resigned herself to a quiet life. But that all changes the night of the party at the Century Club, where she escapes to the garden for some peace and quiet—and instead spots an uninvited guest in the shadows. Half an hour later, the party turns into a murder scene. When a vulnerable woman is connected to the crime, Kaveri becomes determined to save her and launches a private investigation to find the killer, tracing his steps from an illustrious brothel to an Englishman’s mansion.

Billie, Mary Alice, Helen, and Natalie have worked for the Museum, an elite network of assassins, for 40 years. Now their talents are considered old-school and no one appreciates what they have to offer in an age that relies more on technology than people skills.

The Fairway Players, a local theatre group, is in the midst of rehearsals when tragedy strikes the family of director Martin Hayward and his wife Helen, the play’s star. Their young granddaughter has been diagnosed with a rare form of cancer, and with an experimental treatment costing a tremendous sum, their castmates rally to raise the money to give her a chance at survival.

It's 1942 and Willowjean "Will" Parker is a scrappy circus runaway whose knife-throwing skills have just saved the life of New York's best, and most unorthodox, private investigator, Lillian Pentecost. When the dapper detective summons Will a few days later, she doesn't expect to be offered a life-changing proposition: Lillian's multiple sclerosis means she can't keep up with her old case load alone, so she wants to hire Will to be her right-hand woman. In return, Will is to receive a salary, room and board, and training in Lillian's very particular art of investigation.

After losing his leg to a land mine in Afghanistan, Cormoran Strike is barely scraping by as a private investigator. Strike is down to one client, creditors are calling, and after a breakup with his longtime girlfriend, he’s living in his office. Then John Bristow walks through his door with a shocking story: His sister, the legendary supermodel Lula Landry - known to her friends as the Cuckoo - famously fell to her death a few months earlier.

Adelaide Hills, Christmas Eve, 1959. At the end of a scorching hot day, a local deliveryman makes a terrible discovery. A police investigation is called, and the small town of Tambilla becomes embroiled in one of the most shocking and perplexing murder cases in the history of South Australia. Many years later and thousands of miles away, Jess is a journalist in search of a story. Having lived and worked in London for nearly two decades, she now finds herself laid off from her full-time job and struggling to make ends meet. Until a phone call out of nowhere summons her back to Sydney.

Clare Cassidy is no stranger to murder. A high school English teacher specializing in the Gothic writer R. M. Holland, she teaches a course on it every year. But when one of Clare’s colleagues and closest friends is found dead, with a line from R. M. Holland’s most famous story, “The Stranger”, left by her body, Clare is horrified to see her life collide with the story lines of her favorite literature.

A murdered opera singer. A duke drenched in her blood. For Bow Street Officer Hugh Marsden, the brutal killing is a straightforward case. Ever since his exile from polite society, the chance to arrest a high and mighty peer of the realm has never presented itself. Hugh won't snub the opportunity now. But Audrey Sinclair, the Duchess of Fournier, is certain her husband is wrongly accused, and she's determined to prove it to the arrogant Bow Street officer, even if she must employ her most peculiar ability—or perhaps curse—to guide her investigation. After all, a duchess can do as she pleases.

Seeking women ages 18-32 to participate in a study on ethics and morality. Generous compensation. Anonymity guaranteed. When Jessica Farris signs up for a psychology study conducted by the mysterious Dr. Shields, she thinks all she’ll have to do is answer a few questions, collect her money, and leave. But as the questions grow more and more intense and invasive and the sessions become outings where Jess is told what to wear and how to act, she begins to feel as though Dr. Shields may know what she’s thinking...and what she’s hiding.

During intermission at the famed La Fenice opera house in Venice, Italy, a notoriously difficult and widely disliked German conductor is poisoned—and suspects abound. Guido Brunetti, a native Venetian, sets out to unravel the mystery behind the high-profile murder. To do so, he calls on his knowledge of Venice, its culture, and its dirty politics. Along the way, he finds the crime may have roots going back decades—and that revenge, corruption, and even Italian cuisine may play a role.

In 1985, Yale Tishman, the development director for an art gallery in Chicago, is about to pull off an amazing coup, bringing in an extraordinary collection of 1920s paintings as a gift to the gallery. Yet as his career begins to flourish, the carnage of the AIDS epidemic grows around him. One by one, his friends are dying and after his friend Nico's funeral, the virus circles closer and closer to Yale himself. Soon the only person he has left is Fiona, Nico's little sister.

It is the early spring of 2016 and Queen Elizabeth is at Windsor Castle in advance of her 90th birthday celebrations. But the preparations are interrupted when a guest is found dead in one of the Castle bedrooms. The scene suggests the young Russian pianist strangled himself, but a badly tied knot leads MI5 to suspect foul play was involved. The Queen leaves the investigation to the professionals—until their suspicions point them in the wrong direction. Unhappy at the mishandling of the case and concerned for her staff's morale, the monarch decides to take matters into her own hands.

Never a doubt. Never a mistake. Always for justice. Never for revenge. She's the person you hire when you need something fixed-permanently. With a strict set of criteria, she evaluates every request and chooses only a few. No more than one job per country, per year. She will only step in if it's clear that justice will not be served any other way. Her jobs are completed with skill and precision, and never result in inquiry or police investigation. The Fixer is invisible - and quite deadly.