Women are turning up dead on a lone stretch of highway in Delaware. Some go missing for an inexplicable length of time, while others are turning up dead, their bodies left out for display in bizarre and mysterious ways. When a pattern is discovered, it becomes clear to the FBI that a twisted serial killer is on the hunt - luring girls in devious schemes - and that he won't stop killing, ever.

Men and women are turning up dead in the outskirts of Seattle, poisoned by a mysterious chemical. When a pattern is discovered and it becomes clear that a twisted serial killer is on the hunt, the FBI calls in their best asset: Special Agent Riley Paige. Riley is urged to return to the line of duty - but Riley, still reeling from the attacks on her family, is loath to return. Yet as bodies mount, and the murders become more inexplicable, Riley knows she has no choice.

When Special Agent Riley Paige finally decides to take a well-needed rest from the FBI, a request for help comes from the most unlikely source - her own daughter. April's best friend is devastated by the death of her sister, a freshman at Georgetown. Worse, she is convinced that the suicide was staged, and that her sister was murdered at the hands of a serial killer.

There is one cold case that has plagued Special Agent Riley Paige for her entire career, dwelling at the corners of her consciousness, forcing her to return to it again and again. The only case she has never solved, she has finally put it out of her mind. Until she gets a call from the murdered victim's mother. It spurs Riley to face the case once again, and to not give up until she has found answers. Yet Riley barely has time to catch her breath when she receives a lead for another cold case, one which, if possible, strikes an even deeper note within her.

Once Stalked is book #9 in the bestselling Riley Paige mystery series, which begins with the #1 bestseller Once Gone (Book #1). When two soldiers are found dead on a huge military base in California, apparently killed by gunshot, military investigators are stumped. Who is killing its soldiers inside the secure confines of its own base? The FBI is called in, and Riley Paige is summoned to take the lead. As Riley finds herself immersed in the military culture, she is amazed to realize that serial killers can strike even here, in the midst of the most secure location on earth.  

Still reeling from her former partner Lucy’s death and from her partner Bill’s PTSD, FBI Special Agent Riley Paige does her best to try to keep herself stable and to patch together her family life. She has to decide what to about April’s boyfriend, recovering from his abusive father, and about Blaine, who is ready for their relationship to move ahead. But before she can work it out, Riley is summoned for a new case. In an idyllic suburban town in the Midwest, teenage girls are going missing - and a body has already turned up.

A serial killer is killing victims at rapid speed, and in each crime scene, he leaves an unusual signature: an hourglass. The sand in it is designed to fall for 24 hours and when it is empty, a new victim appears. Amidst intense media pressure, and in a frantic race against time, FBI Special Agent Riley Paige is summoned, with her new partner, to crack the case.

In this heart-pounding thriller, women are being found dead on train tracks across the country, forcing the FBI into a mad race against time to catch the serial killer. FBI Special Agent Riley Paige may have finally met her match: a sadistic killer, binding victims to the tracks to be killed by incoming trains. A killer smart enough to evade capture across many states - and charming enough to go unseen. She soon learns it will require all of her faculties to enter into his sick mind - a mind which she unsure she wants to enter.

In this dark psychological thriller, a wealthy husband turns up dead, and his abused wife is charged with the crime. She calls Riley for help - and yet it seems clear she is guilty. But when another wealthy, abusive husband turns up dead, the FBI is called in, and FBI special agent Riley Paige wonders: Is this all a coincidence? Or could this be the work of a serial killer? What ensues is a game of cat and mouse, as Riley Paige realizes she is up against a brilliant and unpredictable killer, one without a clear motive - and one determined to keep on killing until he is caught.

When a serial killer strikes across a series of towns, and the only potential witness is unable to speak, it is up to FBI special agent Riley Paige to enter the mind of this complex man and learn what, if anything, he knows. What do these victims have in common? What exactly did this man witness? In this dark psychological suspense thriller, Riley Paige must battle her own demons as she is summoned to solve a crime that leaves all others stumped - one that will force her to enter too deep into the mind of a psychopath.