The Rule of Four


Ian Caldwell - 2004
    Seniors are scrambling to finish their theses. And two students, Tom Sullivan and Paul Harris, are a hair's breadth from solving the mysteries of the Hypnerotomachia Poliphili--a renowned text attributed to an Italian nobleman, a work that has baffled scholars since its publication in 1499. For Tom, their research has been a link to his family's past -- and an obstacle to the woman he loves. For Paul, it has become an obsession, the very reason for living. But as their deadline looms, research has stalled -- until a long-lost diary surfaces with a vital clue. And when a fellow researcher is murdered just hours later, Tom and Paul realize that they are not the first to glimpse the Hypnerotomachia 's secrets.Suddenly the stakes are raised, and as the two friends sift through the codes and riddles at the heart of the text, they are beginnning to see the manuscript in a new light--not simply as a story of faith, eroticism and pedantry, but as a bizarre, coded mathematical maze. And as they come closer and closer to deciphering the final puzzle of a book that has shattered careers, friendships and families, they know that their own lives are in mortal danger. Because at least one person has been killed for knowing too much. And they know even more.From the streets of fifteenth-century Rome to the rarified realm of Princeton, from a shocking 500 year-old murder scene to the drama of a young man's coming of age, The Rule of Four takes us on an entertaining, illuminating tour of history--as it builds to a pinnacle of nearly unbearable suspense.

The Third to Die


Allison Brennan - 2020
    An ambitious FBI special agent. Together they are at the heart of the ticking-clock investigation for a psychopathic serial killer. The bond they forge in this crucible sets the stage for high-stakes suspense.Detective Kara Quinn, on leave from the LAPD, is on an early morning jog in her hometown of Liberty Lake when she comes upon the body of a young nurse. The manner of death shows a pattern of highly controlled rage. Meanwhile in DC, FBI special agent Mathias Costa is staffing his newly minted Mobile Response Team. Word reaches Matt that the Liberty Lake murder fits the profile of the compulsive Triple Killer. It will be the first case for the MRT. This time they have a chance to stop this zealous if elusive killer before he strikes again. But only if they can figure out who he is and where he is hiding before he disappears for another three years. The stakes are higher than ever before, because if they fail, one of their own will be next...

The Third Twin


C.J. Omololu - 2015
    Identical DNA. Identical suspects. It's Pretty Little Liars meets Revenge in this edge-of-your-seat thriller with a shocking twist.When they were little, Lexi and her identical twin, Ava, made up a third sister, Alicia. If something broke? Alicia did it. Cookies got eaten? Alicia's guilty. Alicia was always to blame for everything. The game is all grown up now that the girls are seniors. They use Alicia as their cover to go out with boys who are hot but not exactly dating material. Boys they'd never, ever be with in real life.Now one of the guys Alicia went out with has turned up dead, and Lexi wants to stop the game for good. As coincidences start piling up, Ava insists that if they follow the rules for being Alicia, everything will be fine. But when another boy is killed, the DNA evidence and surveillance photos point to only one suspect: Alicia. The girl who doesn't exist. As she runs from the cops, Lexi has to find the truth before another boy is murdered. Because either Ava is a killer…or Alicia is real.

The Final Cut


Catherine Coulter - 2013
    Then the centerpiece of the exhibit, the infamous Koh-i-Noor Diamond, is stolen from the Queen Mother’s crown. Drummond, American-born but raised in the UK, is a dark, dangerous, fast-rising star in the Yard who never backs down. And this case is no exception.Special Agents Lacey Sherlock and Dillon Savich from Coulter’s bestselling FBI series don’t hesitate to help Drummond find the cunning international thief known as the Fox. Nonstop action and high stakes intensify as the chase gets deadly. The Fox will stop at nothing to deliver the Koh-i-Noor to the man who believes in its deadly prophecy.  Nicholas Drummond, along with his partner, FBI Special Agent Mike Caine, lay it on the line to retrieve the diamond for Queen and country.

Alone


Lisa Gardner - 2004
    . . Massachusetts State Trooper Bobby Dodge watches a tense hostage standoff unfold through the scope of his sniper rifle. Just across the street, in wealthy Back Bay, Boston, an armed man has barricaded himself with his wife and child. The man’s finger tightens on the trigger and Dodge has only a split second to react . . . and forever pay the consequences.Alone . . . that’s where the nightmare began for cool, beautiful, and dangerously sexy Catherine Rose Gagnon. Twenty-five years ago, she was buried underground during a month-long nightmare of abduction and abuse. Now her husband has just been killed. Her father-in-law, the powerful Judge Gagnon, blames Catherine for his son’s death . . . and for the series of unexplained illnesses that have sent her own young son repeatedly to the hospital. Alone . . . a madman survived solitary confinement in a maximum security prison where he’d done hard time for the most sadistic of crimes. Now he walks the streets a free man, invisible, anonymous . . . and filled with an unquenchable rage for vengeance. What brings them together is a moment of violence—but what connects them is a passion far deeper and much more dangerous. For a killer is loose who’s woven such an intricate web of evil that no one is above suspicion, no one is beyond harm, and no one will see death coming until it has them cornered, helpless, and alone.

Monkeewrench


P.J. Tracy - 2003
    Literally. With Serial Killer Detective out in limited release, the real-life murders of a jogger and a young woman have already mimicked the first two scenarios in the game. But Grace McBride and her eccentric Monkeewrench partners are caught in a vise. If they tell the Minneapolis police of the link between their game and the murders, they'll shine a spotlight on the past they thought they had erased-and the horror they thought they'd left behind. If they don't, eighteen more people will die...

Gorky Park


Martin Cruz Smith - 1981
    Chief homicide investigator Arkady Renko is brilliant, sensitive, honest, and cynical about everything except his profession. To identify the victims and uncover the truth, he must battle the KGB, FBI, and New York police as he performs the impossible--and tries to stay alive doing it.

Plum Island


Nelson DeMille - 1997
    the wry wit of The Gold Coast...this is vintage Nelson DeMille at the peak of his originality and the height of his powers.Wounded in the line of duty, NYPD homicide cop John Corey is convalescing in rural eastern Long Island when an attractive young couple he knows is found shot to death on the family patio. The victims were biologists at Plum Island, a research site rumored to be an incubator for germ warfare.Suddenly, a local double murder takes on shattering global implications -- and thrusts Corey and two extraordinary women into a dangerous search for the secret of PLUM ISLAND....

The Alchemist's Secret


Scott Mariani - 2007
    But it soon becomes apparent that others are hunting this most precious of treasures – for far more evil ends. It seems that everyone – from the Nazis of the past to the shadowy modern organisation known as Gladius Domini – wants to uncover the secrets of immortality.Teaming up with attractive American scientist Dr Roberta Ryder, Ben is led on a wild and dangerous trail from Paris to the ancient Cathar strongholds of the Languedoc, where an astonishing secret has lain hidden for centuries…

Bad Things Happen


Harry Dolan - 2009
    He’s hoping to escape a violent past he would rather forget. But his solitude is broken when he finds himself drawn into a friendship with Tom Kristoll, publisher of the mystery magazine Gray Streets—and into an affair with Laura, Tom’s sleek blond wife. When Tom offers him a job as an editor, Loogan sees no harm in accepting. What he doesn’t realize is that the stories in Gray Streets tend to follow a simple formula: Plans go wrong. Bad things happen. People die.Elizabeth Waishkey is a single mother raising a fifteen-year-old daughter. She’s also the most talented detective in the Ann Arbor Police Department. But when Tom Kristoll turns up dead, she doesn’t quite know what to make of David Loogan. Is he a killer, or an ally who might help her find the truth? Loogan, for his part, would like to trust her, but he has his own agenda. He suspects his friend’s death is part of a much larger puzzle, and he’s not going to wait for someone else to put the pieces together. As Loogan and Elizabeth navigate their way through the Kristoll's world, they find no shortage of people with motives for murder, from a young graduate student obsessed with Laura Kristoll to a trio of bestselling writers, all of them with secrets they don’t want uncovered.As the deaths start mounting up—some of them echoing stories published in Gray Streets—Loogan begins to look more and more like the most promising suspect.Soon it becomes clear that only Elizabeth can find the path to solving both the murders and the mystery of Loogan himself. But by the time she unravels the twisted skein, Loogan May be indicted for murder—or more likely, become the next victim.

In the Barren Ground


Loreth Anne White - 2016
    Humans are scarce; ferocious predators roam freely. Locals say spirits do, too.Rookie cop Tana Larsson doesn’t mind the dark and quiet. Five months pregnant and hoping to escape the mistakes of her past, she takes a post in Twin Rivers, population 320. Maybe here she can find peace and community for her child.But with her superior out of commission, Tana becomes the sole police officer in 17,500 square miles. One bitter night, she gets a call about the fatal wolf mauling of two students, and the only way to reach the remote scene is to enlist the help of the arrogant, irritatingly handsome Cameron “Crash” O’Halloran, a local bush pilot with a shady reputation for smuggling and a past cloaked in shadow.When the macabre scene they uncover suggests violence much more sinister than animal, Tana must trust Crash if she wants to protect the town—and herself—from the evil that lurks in the frozen dark.IN THE BARREN GROUND, a dark, atmospheric romance and police procedural with gothic/horror overtones set in a remote fly-in community just south of the arctic circle ...

Cross Her Heart


Melinda Leigh - 2020
    There’s just one chilling difference. Erin’s husband, Justin, has vanished.Bree knows how explosive the line between love and hate can be, yet the evidence against her troubled brother-in-law isn’t adding up. Teaming up with Justin’s old friend, former sheriff’s investigator and K-9 handler Matt Flynn, Bree vows to uncover the secrets of her sister’s life and death, as she promised Erin’s children. But as her investigation unfolds, the danger hits close to home. Once again, Bree’s family is caught in a death grip. And this time, it could be fatal for her.

Don't Cry


Beverly Barton - 2010
    It-s clear to her, and to Special Agent J.D. Cass, that the murders are the work of a deranged serial killer. At first, the only link is the victims- similar physical appearance. But then another connection emerges, tying them to a long-ago series of horrifying crimes Audrey hoped would never resurface - crimes that hit all too close to home.No Time To CryEach grisly new discovery proves the past has not been forgotten, and the worst is yet to come. Audrey went looking for the truth and she's about to find it-and it will be more twisted and more terrifying than she ever imagined...

Rules of Deception


Christopher Reich - 2008
    Jonathan Ransom, a surgeon for Doctors Without Borders, is climbing in the Swiss Alps with his wife, Emma, when she falls into a hidden crevasse and dies. Twenty-four hours later, Jonathan receives an envelope addressed to his wife containing two baggage-claim tickets. Puzzled, he journeys to a railway station only to find himself inexplicably attacked by the Swiss police. Suddenly forced on the run, Jonathan's only chance at survival lies in uncovering the devastating truth behind his wife's secret life.

The Last Templar


Raymond Khoury - 2005
    The ship vanishes without a trace.In present day Manhattan, four masked horsemen dressed as Templar Knights emerge from Central Park and ride up the Fifth Avenue steps of the Metropolitan Museum of Art during the blacktie opening of a Treasures of the Vatican exhibit. Storming through the crowds, the horsemen brutally attack anyone standing between them and their prize. Attending the gala, archaeologist Tess Chaykin watches in silent terror as the leader of the horsemen hones in on one piece in particular, a strange geared device. He utters a few cryptic Latin words as he takes hold of it with reverence before leading the horsemen out and disappearing into the night.In the aftermath, an FBI investigation is led by anti-terrorist specialist Sean Reilly. Soon, he and Tess are drawn into the dark, hidden history of the crusading Knights, plunging them into a deadly game of cat and mouse with ruthless killers as they race across three continents to recover the lost secret of the Templars.