Spectrum

The year is 1995 and the NYPD has just graduated a promising new patrol officer named Karen Vail. The rookie's first day on the job is anything but easy when she finds herself at the crime scene of a young woman murdered in an unusual manner. Vail is unsure of what she's looking at or what it means—but it's a case that will weigh on her mind for nearly twenty years.

As the years pass, Vail's career takes unexpected twists and turns—as does the case that's come to be known as Hades. Now a skilled FBI profiler, will Vail be in a better position to catch the killer? Or will Hades prove to be Karen Vail's hell on earth?

The criminal profiler who has captivated readers worldwide—and who won the praise of literary giants Michael Connelly, James Patterson, and Nelson DeMille—returns in a story that captures the experiences that made her the top cop she is today.

"Series fans will appreciate the extensive background information that details Vail's growth as an investigator." — Publishers Weekly

"A fast-paced, satisfying thriller." — Booklist

"Just when you think you have it all figured out, Jacobson throws up a dead end sign and you have to back out of what you thought was the right path to turn down. That's good writing." — New York Journal of Books

" Spectrum is a pulse-pounding exercise in white-knuckle storytelling." — Providence Journal