Recommendations based on "The Crystal Key"

A computer genius pulls off her greatest hack yet -- and her skill might just get her killed. Angela Hoot's government career begins with an ending. Her unorthodox programming skills get her kicked out of MIT's graduate school and into the Bureau's cyber-forensics unit. A messaging app with sophisticated tracking capabilities surfaces. Its beta users, all young women, are only identified as they turn up dead in their bedrooms. As Angela races to crack the killer's digital code, their technical rivalry escalates. She must deny the killer access to her personal life, or risk losing her life to the underbelly of the Internet.

A cunning killer hides in plain sight. A troubled teenage girl has been charged with the grisly murder of her stepfather. The evidence is damning: Emily was found alone at the scene with blood on her hands, and an incriminating e-mail she wrote outlines a murder plot identical to the method of the brutal slaying. But deputy district attorney Julia Chandler believes her niece is innocent, and she’s determined to keep the promise she made to protect her dead brother’s daughter–even if it means hiring private eye Connor Kincaid . . . the man who blames her for forcing his resignation from the police department. Together Julia and Connor uncover a chain of unsolved violent crimes tied to an unorthodox therapist whose anonymous online patients purge their anger by posting lethal fantasies. But someone in the group has turned vigilante, turning the game of virtual murder into a flesh-and-blood vendetta. After evil is seen, face your ultimate fear.

An unsolved homicide. Old secrets. And investigators with a past. Cold Case Unit supervisor Phillipa Stevenson is willing to investigate an unsolved murder for her ex-fiancé—without his help. Detective Kyle Rossi broke her heart years ago, but she’ll find justice for his sister-in-law. Only, the victim isn’t who they thought she was. And working with Kyle becomes Phillipa’s best chance. As they follow a decade-long trail of betrayal and murder, Phillipa must put aside her heartache to uncover the truth…about the victim’s past and their own.

Bestselling novelist Barbara Freethy (Don't Say a Word) has another crowd-pleasing page-turner in the first of a tricky romantic suspense series. After a whirlwind courtship, San Francisco artist Kayla is about to fulfill her dream of marrying Mr. Right and starting a family?but on the wedding night, her dream man abandons her. Meanwhile, engineer Nick Granville returns home to San Francisco after a few months working in Africa to find his house lived in and his bank accounts plundered. Turns out these two strangers were duped by the same man: handsome, blond, smooth-talking Evan Chadwick. Unable to get the attention of the SFPD, the two marks take it upon themselves to track down Evan and get back what's theirs. As the clues accumulate, so do the smoldering glances between broad-shouldered Nick and curvy Kayla, but Freethy's sex scenes have a reportorial feel that may leave readers cold. Evan's cat and mouse game, however, should hook suspense fans and carry them into the next volume?as Evan says, "the game will be over when I say it's over," and this is just his first play.

In this Honor Bound romance, a perilous change of heart looms for two former lovers... Exactly why should P.I. Vince Sutton take his ex-wife's case? Because she, assistant district attorney Simone Armstrong, put his brother in jail? Because the ambitious spitfire still drives him crazy? No, he'll take it because "The Avenging Angel" makes him a deal he can't refuse. Sparks fly when Vince works all-too-closely with Simone to locate her missing key witness...but in the process, they are drawn into a cold case. As much as he tries, Vince can't deny that he's never gotten over beautiful Simone, but can he admit his feelings to her--and himself? And can he save her from the danger that's heading their way?

Private investigator Vivi Angelino loves living life on the edge, but stepping into the shoes of a movie starlet to bait a serial killer isn't just a thrill . . . it's a ticket to the big time for her fledgling security firm. That is, as long as a certain risk-averse FBI agent stays out of her way-and out of her fantasies.Assistant Special Agent in Charge Colton Lang isn't above using his well-worn rulebook to stop Vivi's latest walk on the wild side. But when they learn her client is involved in something far more insidious than bad acting, Vivi and Colt must work together despite the electrifying attraction arcing between them. For each new clue is bringing them closer to a high-profile crime with a dark and deadly truth at its core . . . and a cold, calculating murderer with nothing left to lose.

The Colby Agency of Chicago has long handled the most private investigations with discretion and success. Staff from the top down maintain pristine reputations and the agency always works within the law. Until now... With a long list of clients comes an equal number of enemies. Someone wants revenge--and is determined to get it starting with Victoria Colby-Camp. The only hope of survival for Victoria and her staff lies with Colby investigator Slade Convoy and a total stranger--Mia Dawson, a personal assistant in the D.A.'s office. With the offices in lockdown and holding hostages, the captors have one demand and a twenty-four-hour deadline: kidnap Cook County D.A. Gordon and deliver him to the Colby Agency. Slade's assignment is twofold: gain the cooperation of Mia, the only person who knows how to get past Gordon's security, by whatever means necessary and bring in Gordon. Together Slade and Mia have no alternative but to break the law in order to execute the operation. But will they be able to plead their case once justice is served? And will the operation fail when Slade learns Mia has an agenda of her own?

When the Colby Agency and the Equalizers merged, their agents were expected to work together. But the moment Ted Tallant met hotshot investigator Nora Friedman, there were sparks--and not the good kind. Nora was a risk taker, while Ted was a by-the-book kind of guy. When they were sent to Vegas on a case, those sparks turned into something hotter. They were good together--really good. But when an enemy from Nora's past twisted their assignment into something deadly, all hell broke loose. And suddenly skill and attraction weren't enough. They would have to trust each other...or everyone would die.

Omega Sector, an interagency task force, is made up of the country’s most elite agents. In these four classic tales by USA TODAY bestselling author Janie Crouch, they’ll be challenged like never before! Stealth The wrong place at the wrong time—that’s the only way Sophia Reardon could explain her predicament. She wasn’t even an FBI field agent and now she was being taken hostage. By her ex-boyfriend Cameron Branson. The moment Sophia walked into his undercover operation, Cameron warned her that his “employers” would want to break her. So keeping her by his side, pretending not to have feelings for her, was the best way to maintain his role in the dangerous organization, and the only way to keep them both safe. Because if they got their hands on her, she could expose him and his secrets. And then they’d no longer have any reason to keep her around… Covert At first it looked like a glorified babysitting job: safeguard a scientist while she created a countermeasure to neutralize a dangerous weapon that had fallen into the wrong hands. But when Dr. Megan Fuller’s life is threatened, undercover agent Sawyer Branson knows the enemy is closing in. Sticking by Megan 24/7 isn’t something he takes lightly, even if Megan doesn’t seem to appreciate his constant presence. But she soon becomes a challenge he enjoys. Because beneath her boxy lab coat and pinned-back hair lay a brilliant and beautiful warrior. One he’s determined to protect at all costs. Conceal As Bob and Lisa Sinclair, Omega Sector agents Evan Karcz and Juliet Branson were a formidable couple—until a brutal attack left Juliet traumatized. But with a powerful crime boss selling military secrets, the safety of millions depends on the undercover operatives. Evan’s strategy is to be near Juliet night and day to practice posing as a loving couple. But soon he realizes there’s a sizzling passion between them. With a killer stalking Lisa Sinclair, her “husband” knows he’d risk his cover—and his life—to protect her. Secret Former operative turned pilot Dylan Branson has one mission: deliver vital codes to Omega Sector before millions of lives are lost. Surprisingly, the codes reside in the photographic memory of Shelby Keelan, a beautiful computer expert who’s so far survived two murder attempts. Used to doing things solo, Dylan will get Shelby to Washington, DC, then walk away. So he’s stunned to discover she’s as much a loner as he is—and how much that appeals to him. Now, with both their lives in danger after his plane is sabotaged midair, Dylan no longer thinks of Shelby as just a job. Or that he’ll be able to let her go once it’s over.

Jordan Colby, ex-model turned super secret agent, got her heart broken when she fell in love with a dirty cop, T.J. Scott. Now he's back on her personal radar and all the feelings she had for him are just as intense as ever. The bad thing is she's on a mission for Omega that can't wait and no one else has the credential to walk in as easily as she did.