Spin, by Patricia Cornwell
In the aftermath of a NASA rocket launch gone terribly wrong, Captain Calli Chase comes face-to-face with her missing twin sister--as well as the startling truth of who they really are. Now, a top secret program put in motion years ago has spun out of control, and only Calli can redirect its course.

Aided by cutting-edge technologies, the NASA investigator and scientist turned Space Force pilot sets out on a frantic search for the missing link between the sabotaged rocket launch and her predetermined destiny...a search that someone else seems very interested in stopping.

From NASA to the Chase family farm, to the White House to distant orbits of space, Calli plays a high-stakes game of hide-and-seek with a cunning and ruthless adversary. One wrong move will unleash cataclysmic consequences reaching far beyond the boundaries of Earth.

Before She Disappeared, by Lisa Gardner
Frankie Elkin searches for missing people the world has stopped looking for. When the police have given up, when the public no longer remembers, when the media has never paid attention, Frankie starts looking.

A new case brings her to a Boston neighborhood with a rough reputation. She is searching for Angelique Badeau, a Haitian teenager who vanished from her high school months earlier. Resistance from the Boston PD and the victim's wary family tells Frankie she's on her own--and she soon learns she's asking questions someone doesn't want answered. But Frankie will stop at nothing to discover the truth, even if it means the next person to go missing could be her.

All the Colors of the Night, by Jayne Ann Krentz
North Chastain has always had the mysterious ability to channel energy through crystals. He and his father both have the ability, which is what the doctors believe is the cause of his father's sudden coma. But North is convinced it was brought on by an artifact his father had been looking for--and found. North is the one with the best chance at recovering the artifact, but he also needs someone who knows the shadowy world of crazy collectors, deceptive dealers, and dangerous raiders.

Sierra Raines works in the murky backwaters of the paranormal artifacts trade. She takes commissions to find, acquire, and transport objects that are hot commodities in the antiquities world. When North Chastain approaches her, Sierra takes him on as a client, though not without reservations. They wind up in Fogg Lake, and soon discover that they will have to trust each other in order to not only save North's father but also to survive.

The Russian, by James Patterson
A series of gruesome murders in New York City has Michael Bennett angry, but when he identifies similar cases in Atlanta and San Francisco, his feelings escalate into all-out alarm. All of the victims are young women, and each one is killed in a horrifyingly distinct fashion. In the midst of such devastating loss of life, Bennett's longtime love, Mary Catherine, is soon to become his bride. As Bennett toils to connect the cases, the killer strikes again. Just when New York's top investigator should be donning his wedding finery, he may be stepping into a diabolical trap.

Neighbors, by Danielle Steel
A reclusive woman opens up her home to her neighbors in the wake of a devastating earthquake, setting off events that reveal secrets, break relationships apart, and bring strangers together to forge powerful new bonds.